76511985511 has 32 divisors (see below), whose sum is σ = 84802088448. Its totient is φ = 68600822400.

The previous prime is 76511985509. The next prime is 76511985551. The reversal of 76511985511 is 11558911567.

It is a cyclic number.

It is not a de Polignac number, because 76511985511 - 2¹ = 76511985509 is a prime.

It is a super-2 number, since 2×76511985511² (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 (76511985551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23134720 + ... + 23138026.

It is an arithmetic number, because the mean of its divisors is an integer number (2650065264).

Almost surely, 2^76511985511 is an apocalyptic number.

76511985511 is a deficient number, since it is larger than the sum of its proper divisors (8290102937).

76511985511 is a wasteful number, since it uses less digits than its factorization.

76511985511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751.

The product of its digits is 378000, while the sum is 49.

The spelling of 76511985511 in words is "seventy-six billion, five hundred eleven million, nine hundred eighty-five thousand, five hundred eleven".