76616651520 has 144 divisors (see below), whose sum is σ = 271882823520. Its totient is φ = 20431097856.

The previous prime is 76616651509. The next prime is 76616651543. The reversal of 76616651520 is 2515661667.

76616651520 is a `hidden beast` number, since 7 + 6 + 61 + 6 + 65 + 1 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×76616651520² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1073899 + ... + 1143018.

Almost surely, 2^76616651520 is an apocalyptic number.

It is an amenable number.

76616651520 is an abundant number, since it is smaller than the sum of its proper divisors (195266172000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76616651520 is a wasteful number, since it uses less digits than its factorization.

76616651520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216947 (or 2216927 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 76616651520 in words is "seventy-six billion, six hundred sixteen million, six hundred fifty-one thousand, five hundred twenty".