20152202451 has 16 divisors (see below), whose sum is σ = 27025286400. Its totient is φ = 13357064160.

The previous prime is 20152202381. The next prime is 20152202489. The reversal of 20152202451 is 15420225102.

It is not a de Polignac number, because 20152202451 - 2¹⁰ = 20152201427 is a prime.

It is a super-2 number, since 2×20152202451² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20152202251) 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, 812236 + ... + 836678.

It is an arithmetic number, because the mean of its divisors is an integer number (1689080400).

Almost surely, 2^20152202451 is an apocalyptic number.

20152202451 is a deficient number, since it is larger than the sum of its proper divisors (6873083949).

20152202451 is a wasteful number, since it uses less digits than its factorization.

20152202451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26026.

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 20152202451 its reverse (15420225102), we get a palindrome (35572427553).

The spelling of 20152202451 in words is "twenty billion, one hundred fifty-two million, two hundred two thousand, four hundred fifty-one".