499999636499999 has 8 divisors (see below), whose sum is σ = 508197814863792. Its totient is φ = 491801505330240.

The previous prime is 499999636499983. The next prime is 499999636500019. The reversal of 499999636499999 is 999994636999994.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 499999636499999 - 2⁴ = 499999636499983 is a prime.

It is a super-2 number, since 2×499999636499999² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499999636499893 and 499999636499902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499999636499899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9888452 + ... + 33132774.

It is an arithmetic number, because the mean of its divisors is an integer number (63524726857974).

Almost surely, 2^{499999636499999} is an apocalyptic number.

499999636499999 is a deficient number, since it is larger than the sum of its proper divisors (8198178363793).

499999636499999 is a wasteful number, since it uses less digits than its factorization.

499999636499999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23597017.

The product of its digits is 6025163444928, while the sum is 113.

The spelling of 499999636499999 in words is "four hundred ninety-nine trillion, nine hundred ninety-nine billion, six hundred thirty-six million, four hundred ninety-nine thousand, nine hundred ninety-nine".