30493122156 has 144 divisors (see below), whose sum is σ = 93869246016. Its totient is φ = 8147423232.

The previous prime is 30493122133. The next prime is 30493122197. The reversal of 30493122156 is 65122139403.

30493122156 is a `hidden beast` number, since 3 + 0 + 493 + 12 + 2 + 156 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30493122156.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 649920 + ... + 695256.

It is an arithmetic number, because the mean of its divisors is an integer number (651869764).

Almost surely, 2^30493122156 is an apocalyptic number.

30493122156 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30493122156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46934623008).

30493122156 is an abundant number, since it is smaller than the sum of its proper divisors (63376123860).

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

30493122156 is a wasteful number, since it uses less digits than its factorization.

30493122156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45528 (or 45523 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 30493122156 in words is "thirty billion, four hundred ninety-three million, one hundred twenty-two thousand, one hundred fifty-six".