30636742656 has 96 divisors (see below), whose sum is σ = 87961189680. Its totient is φ = 9426665472.

The previous prime is 30636742639. The next prime is 30636742667. The reversal of 30636742656 is 65624763603.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×30636742656² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111915 + ... + 271658.

Almost surely, 2^30636742656 is an apocalyptic number.

It is an amenable number.

30636742656 is an abundant number, since it is smaller than the sum of its proper divisors (57324447024).

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

30636742656 is a wasteful number, since it uses less digits than its factorization.

30636742656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383611 (or 383591 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 30636742656 in words is "thirty billion, six hundred thirty-six million, seven hundred forty-two thousand, six hundred fifty-six".