30642561630 has 80 divisors (see below), whose sum is σ = 85052398464. Its totient is φ = 7907751360.

The previous prime is 30642561629. The next prime is 30642561643. The reversal of 30642561630 is 3616524603.

30642561630 is a `hidden beast` number, since 3 + 0 + 6 + 4 + 2 + 5 + 616 + 30 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 585057 + ... + 635276.

Almost surely, 2^30642561630 is an apocalyptic number.

30642561630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30642561630 is an abundant number, since it is smaller than the sum of its proper divisors (54409836834).

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

30642561630 is a wasteful number, since it uses less digits than its factorization.

30642561630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220383 (or 1220374 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 30642561630 in words is "thirty billion, six hundred forty-two million, five hundred sixty-one thousand, six hundred thirty".