30520253102412 has 48 divisors (see below), whose sum is σ = 72999909706752. Its totient is φ = 9918610619520.

The previous prime is 30520253102387. The next prime is 30520253102473. The reversal of 30520253102412 is 21420135202503.

It is a self number, because there is not a number n which added to its sum of digits gives 30520253102412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20126848 + ... + 21590055.

It is an arithmetic number, because the mean of its divisors is an integer number (1520831452224).

Almost surely, 2^{30520253102412} is an apocalyptic number.

It is an amenable number.

30520253102412 is an abundant number, since it is smaller than the sum of its proper divisors (42479656604340).

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

30520253102412 is a wasteful number, since it uses less digits than its factorization.

30520253102412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41718438 (or 41718436 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 30520253102412 its reverse (21420135202503), we get a palindrome (51940388304915).

The spelling of 30520253102412 in words is "thirty trillion, five hundred twenty billion, two hundred fifty-three million, one hundred two thousand, four hundred twelve".