30155707020 has 24 divisors (see below), whose sum is σ = 84435979824. Its totient is φ = 8041521856.

The previous prime is 30155707003. The next prime is 30155707039. The reversal of 30155707020 is 2070755103.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 251297499 + ... + 251297618.

It is an arithmetic number, because the mean of its divisors is an integer number (3518165826).

Almost surely, 2^30155707020 is an apocalyptic number.

30155707020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30155707020 is an abundant number, since it is smaller than the sum of its proper divisors (54280272804).

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

30155707020 is a wasteful number, since it uses less digits than its factorization.

30155707020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502595129 (or 502595127 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 30.

The spelling of 30155707020 in words is "thirty billion, one hundred fifty-five million, seven hundred seven thousand, twenty".