76721734260530 has 8 divisors (see below), whose sum is σ = 138099121668972. Its totient is φ = 30688693704208.

The previous prime is 76721734260529. The next prime is 76721734260541. The reversal of 76721734260530 is 3506243712767.

It can be written as a sum of positive squares in 2 ways, for example, as 70949809695241 + 5771924565289 = 8423171^2 + 2402483^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3836086713017 + ... + 3836086713036.

Almost surely, 2^{76721734260530} is an apocalyptic number.

76721734260530 is a deficient number, since it is larger than the sum of its proper divisors (61377387408442).

76721734260530 is a wasteful number, since it uses less digits than its factorization.

76721734260530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7672173426060.

The product of its (nonzero) digits is 8890560, while the sum is 53.

The spelling of 76721734260530 in words is "seventy-six trillion, seven hundred twenty-one billion, seven hundred thirty-four million, two hundred sixty thousand, five hundred thirty".