76699561123 has 16 divisors (see below), whose sum is σ = 80352074880. Its totient is φ = 73148961600.

The previous prime is 76699561111. The next prime is 76699561129. The reversal of 76699561123 is 32116599667.

It is a cyclic number.

It is not a de Polignac number, because 76699561123 - 2¹⁷ = 76699430051 is a prime.

It is a super-2 number, since 2×76699561123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76699561129) 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, 253288 + ... + 466426.

It is an arithmetic number, because the mean of its divisors is an integer number (5022004680).

Almost surely, 2^76699561123 is an apocalyptic number.

76699561123 is a deficient number, since it is larger than the sum of its proper divisors (3652513757).

76699561123 is a wasteful number, since it uses less digits than its factorization.

76699561123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213378.

The product of its digits is 3674160, while the sum is 55.

The spelling of 76699561123 in words is "seventy-six billion, six hundred ninety-nine million, five hundred sixty-one thousand, one hundred twenty-three".