76827199831 has 4 divisors (see below), whose sum is σ = 78461821152. Its totient is φ = 75192578512.

The previous prime is 76827199817. The next prime is 76827199837. The reversal of 76827199831 is 13899172867.

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

It is a de Polignac number, because none of the positive numbers 2^k-76827199831 is a prime.

It is a super-2 number, since 2×76827199831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76827199831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76827199837) 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, 817310590 + ... + 817310683.

It is an arithmetic number, because the mean of its divisors is an integer number (19615455288).

Almost surely, 2^76827199831 is an apocalyptic number.

76827199831 is a deficient number, since it is larger than the sum of its proper divisors (1634621321).

76827199831 is a wasteful number, since it uses less digits than its factorization.

76827199831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634621320.

The product of its digits is 9144576, while the sum is 61.

The spelling of 76827199831 in words is "seventy-six billion, eight hundred twenty-seven million, one hundred ninety-nine thousand, eight hundred thirty-one".