20727913113 has 36 divisors (see below), whose sum is σ = 31042776960. Its totient is φ = 13325549328.

The previous prime is 20727913111. The next prime is 20727913123. The reversal of 20727913113 is 31131972702.

It is a happy number.

It is not a de Polignac number, because 20727913113 - 2¹ = 20727913111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20727913111) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1306756 + ... + 1322522.

It is an arithmetic number, because the mean of its divisors is an integer number (862299360).

Almost surely, 2^20727913113 is an apocalyptic number.

It is an amenable number.

20727913113 is a deficient number, since it is larger than the sum of its proper divisors (10314863847).

20727913113 is a wasteful number, since it uses less digits than its factorization.

20727913113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15938 (or 15892 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The spelling of 20727913113 in words is "twenty billion, seven hundred twenty-seven million, nine hundred thirteen thousand, one hundred thirteen".