76681250005 has 24 divisors (see below), whose sum is σ = 97775784072. Its totient is φ = 57720471552.

The previous prime is 76681249987. The next prime is 76681250017. The reversal of 76681250005 is 50005218667.

It can be written as a sum of positive squares in 12 ways, for example, as 879596964 + 75801653041 = 29658^2 + 275321^2 .

It is not a de Polignac number, because 76681250005 - 2⁵ = 76681249973 is a prime.

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 76681250005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9175909 + ... + 9184261.

It is an arithmetic number, because the mean of its divisors is an integer number (4073991003).

Almost surely, 2^76681250005 is an apocalyptic number.

It is an amenable number.

76681250005 is a deficient number, since it is larger than the sum of its proper divisors (21094534067).

76681250005 is a wasteful number, since it uses less digits than its factorization.

76681250005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14745 (or 14728 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 76681250005 in words is "seventy-six billion, six hundred eighty-one million, two hundred fifty thousand, five".