20357622541 has 4 divisors (see below), whose sum is σ = 20358319900. Its totient is φ = 20356925184.

The previous prime is 20357622517. The next prime is 20357622557. The reversal of 20357622541 is 14522675302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3191120100 + 17166502441 = 56490^2 + 131021^2 .

It is a cyclic number.

It is not a de Polignac number, because 20357622541 - 2⁷ = 20357622413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20357622541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20357622581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302886 + ... + 363943.

It is an arithmetic number, because the mean of its divisors is an integer number (5089579975).

Almost surely, 2^20357622541 is an apocalyptic number.

It is an amenable number.

20357622541 is a deficient number, since it is larger than the sum of its proper divisors (697359).

20357622541 is an equidigital number, since it uses as much as digits as its factorization.

20357622541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697358.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 20357622541 in words is "twenty billion, three hundred fifty-seven million, six hundred twenty-two thousand, five hundred forty-one".