20314145557 has 16 divisors (see below), whose sum is σ = 21345372160. Its totient is φ = 19313468928.

The previous prime is 20314145543. The next prime is 20314145567. The reversal of 20314145557 is 75554141302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20314145557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314145567) 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, 247708 + ... + 319354.

It is an arithmetic number, because the mean of its divisors is an integer number (1334085760).

Almost surely, 2^20314145557 is an apocalyptic number.

It is an amenable number.

20314145557 is a deficient number, since it is larger than the sum of its proper divisors (1031226603).

20314145557 is an equidigital number, since it uses as much as digits as its factorization.

20314145557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71860.

The product of its (nonzero) digits is 84000, while the sum is 37.

Adding to 20314145557 its reverse (75554141302), we get a palindrome (95868286859).

The spelling of 20314145557 in words is "twenty billion, three hundred fourteen million, one hundred forty-five thousand, five hundred fifty-seven".