20338388541 has 12 divisors (see below), whose sum is σ = 29378916060. Its totient is φ = 13558351680.

The previous prime is 20338388533. The next prime is 20338388563. The reversal of 20338388541 is 14588383302.

20338388541 is a `hidden beast` number, since 20 + 3 + 3 + 8 + 3 + 88 + 541 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17094516516 + 3243872025 = 130746^2 + 56955^2 .

It is not a de Polignac number, because 20338388541 - 2³ = 20338388533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20338338541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356001 + ... + 409161.

It is an arithmetic number, because the mean of its divisors is an integer number (2448243005).

Almost surely, 2^20338388541 is an apocalyptic number.

It is an amenable number.

20338388541 is a deficient number, since it is larger than the sum of its proper divisors (9040527519).

20338388541 is a wasteful number, since it uses less digits than its factorization.

20338388541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95676 (or 95673 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 20338388541 in words is "twenty billion, three hundred thirty-eight million, three hundred eighty-eight thousand, five hundred forty-one".