30258555661820 has 12 divisors (see below), whose sum is σ = 63542966889864. Its totient is φ = 12103422264720.

The previous prime is 30258555661819. The next prime is 30258555661837. The reversal of 30258555661820 is 2816655585203.

It is a congruent number.

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, 756463891526 + ... + 756463891565.

It is an arithmetic number, because the mean of its divisors is an integer number (5295247240822).

Almost surely, 2^{30258555661820} is an apocalyptic number.

It is an amenable number.

30258555661820 is an abundant number, since it is smaller than the sum of its proper divisors (33284411228044).

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

30258555661820 is a wasteful number, since it uses less digits than its factorization.

30258555661820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512927783100 (or 1512927783098 counting only the distinct ones).

The product of its (nonzero) digits is 17280000, while the sum is 56.

The spelling of 30258555661820 in words is "thirty trillion, two hundred fifty-eight billion, five hundred fifty-five million, six hundred sixty-one thousand, eight hundred twenty".