20546137629 has 24 divisors (see below), whose sum is σ = 30490652192. Its totient is φ = 13322504160.

The previous prime is 20546137621. The next prime is 20546137679. The reversal of 20546137629 is 92673164502.

20546137629 is a `hidden beast` number, since 2 + 0 + 5 + 4 + 6 + 13 + 7 + 629 = 666.

It is not a de Polignac number, because 20546137629 - 2³ = 20546137621 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20546137621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1099962 + ... + 1118484.

Almost surely, 2^20546137629 is an apocalyptic number.

It is an amenable number.

20546137629 is a deficient number, since it is larger than the sum of its proper divisors (9944514563).

20546137629 is a wasteful number, since it uses less digits than its factorization.

20546137629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21897 (or 21894 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 20546137629 in words is "twenty billion, five hundred forty-six million, one hundred thirty-seven thousand, six hundred twenty-nine".