30161556240 has 40 divisors (see below), whose sum is σ = 93500825088. Its totient is φ = 8043081600.

The previous prime is 30161556223. The next prime is 30161556277. The reversal of 30161556240 is 4265516103.

It is a tau number, because it is divible by the number of its divisors (40).

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, 62836336 + ... + 62836815.

Almost surely, 2^30161556240 is an apocalyptic number.

30161556240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30161556240 is an abundant number, since it is smaller than the sum of its proper divisors (63339268848).

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

30161556240 is a wasteful number, since it uses less digits than its factorization.

30161556240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125673167 (or 125673161 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 30161556240 in words is "thirty billion, one hundred sixty-one million, five hundred fifty-six thousand, two hundred forty".