77527993031 has 16 divisors (see below), whose sum is σ = 82214961408. Its totient is φ = 72978796800.

The previous prime is 77527993027. The next prime is 77527993051. The reversal of 77527993031 is 13039972577.

It is a cyclic number.

It is not a de Polignac number, because 77527993031 - 2² = 77527993027 is a prime.

It is a super-2 number, since 2×77527993031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77527993021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5421611 + ... + 5435891.

It is an arithmetic number, because the mean of its divisors is an integer number (5138435088).

Almost surely, 2^77527993031 is an apocalyptic number.

77527993031 is a deficient number, since it is larger than the sum of its proper divisors (4686968377).

77527993031 is a wasteful number, since it uses less digits than its factorization.

77527993031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19082.

The product of its (nonzero) digits is 2500470, while the sum is 53.

The spelling of 77527993031 in words is "seventy-seven billion, five hundred twenty-seven million, nine hundred ninety-three thousand, thirty-one".