76072172831 has 4 divisors (see below), whose sum is σ = 76527694992. Its totient is φ = 75616650672.

The previous prime is 76072172821. The next prime is 76072172833. The reversal of 76072172831 is 13827127067.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76072172831 - 2¹⁰ = 76072171807 is a prime.

It is a super-2 number, since 2×76072172831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76072172833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227760830 + ... + 227761163.

It is an arithmetic number, because the mean of its divisors is an integer number (19131923748).

Almost surely, 2^76072172831 is an apocalyptic number.

76072172831 is a deficient number, since it is larger than the sum of its proper divisors (455522161).

76072172831 is a wasteful number, since it uses less digits than its factorization.

76072172831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455522160.

The product of its (nonzero) digits is 197568, while the sum is 44.

Adding to 76072172831 its reverse (13827127067), we get a palindrome (89899299898).

The spelling of 76072172831 in words is "seventy-six billion, seventy-two million, one hundred seventy-two thousand, eight hundred thirty-one".