999929249824753 has 4 divisors (see below), whose sum is σ = 999929316904420. Its totient is φ = 999929182745088.

The previous prime is 999929249824691. The next prime is 999929249824759. The reversal of 999929249824753 is 357428942929999.

999929249824753 is a nontrivial binomial coefficient, being equal to C(44719778, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 395618783068224 + 604310466756529 = 19890168^2 + 24582727^2 .

It is a 3-Lehmer number, since φ(999929249824753) divides (999929249824753-1)³.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999929249824753 is a prime.

It is a super-2 number, since 2×999929249824753² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (999929249824759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 44719777.

It is an arithmetic number, because the mean of its divisors is an integer number (249982329226105).

It is a Poulet number, since it divides 2^{999929249824752}-1.

Almost surely, 2^{999929249824753} is an apocalyptic number.

999929249824753 is the 44719777-th triangular number and also the 22359889-th hexagonal number.

999929249824753 is the 14906593-rd centered nonagonal number.

It is an amenable number.

999929249824753 is a deficient number, since it is larger than the sum of its proper divisors (67079667).

999929249824753 is a wasteful number, since it uses less digits than its factorization.

999929249824753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67079666.

The product of its digits is 57140536320, while the sum is 91.

The spelling of 999929249824753 in words is "nine hundred ninety-nine trillion, nine hundred twenty-nine billion, two hundred forty-nine million, eight hundred twenty-four thousand, seven hundred fifty-three".