30157820655 has 32 divisors (see below), whose sum is σ = 48554588160. Its totient is φ = 15983602560.

The previous prime is 30157820647. The next prime is 30157820729. The reversal of 30157820655 is 55602875103.

It is not a de Polignac number, because 30157820655 - 2³ = 30157820647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5509570 + ... + 5515040.

It is an arithmetic number, because the mean of its divisors is an integer number (1517330880).

Almost surely, 2^30157820655 is an apocalyptic number.

30157820655 is a deficient number, since it is larger than the sum of its proper divisors (18396767505).

30157820655 is a wasteful number, since it uses less digits than its factorization.

30157820655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 30157820655 in words is "thirty billion, one hundred fifty-seven million, eight hundred twenty thousand, six hundred fifty-five".