20315101545156 has 96 divisors (see below), whose sum is σ = 54515763283968. Its totient is φ = 5827729628160.

The previous prime is 20315101545127. The next prime is 20315101545161. The reversal of 20315101545156 is 65154510151302.

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, 34197280 + ... + 34786263.

It is an arithmetic number, because the mean of its divisors is an integer number (567872534208).

Almost surely, 2^{20315101545156} is an apocalyptic number.

It is an amenable number.

20315101545156 is an abundant number, since it is smaller than the sum of its proper divisors (34200661738812).

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

20315101545156 is a wasteful number, since it uses less digits than its factorization.

20315101545156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68983681 (or 68983679 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

Adding to 20315101545156 its reverse (65154510151302), we get a palindrome (85469611696458).

The spelling of 20315101545156 in words is "twenty trillion, three hundred fifteen billion, one hundred one million, five hundred forty-five thousand, one hundred fifty-six".