20546634413 has 16 divisors (see below), whose sum is σ = 21587005440. Its totient is φ = 19518727536.

The previous prime is 20546634403. The next prime is 20546634443. The reversal of 20546634413 is 31443664502.

It is not a de Polignac number, because 20546634413 - 2⁶ = 20546634349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20546634403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8783198 + ... + 8785536.

It is an arithmetic number, because the mean of its divisors is an integer number (1349187840).

Almost surely, 2^20546634413 is an apocalyptic number.

20546634413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20546634413 is a deficient number, since it is larger than the sum of its proper divisors (1040371027).

20546634413 is a wasteful number, since it uses less digits than its factorization.

20546634413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 20546634413 in words is "twenty billion, five hundred forty-six million, six hundred thirty-four thousand, four hundred thirteen".