20452342615251 has 16 divisors (see below), whose sum is σ = 27298830263040. Its totient is φ = 13620376009440.

The previous prime is 20452342615207. The next prime is 20452342615261. The reversal of 20452342615251 is 15251624325402.

It is not a de Polignac number, because 20452342615251 - 2¹⁰ = 20452342614227 is a prime.

It is a super-2 number, since 2×20452342615251² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20452342615261) 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, 95973045 + ... + 96185913.

It is an arithmetic number, because the mean of its divisors is an integer number (1706176891440).

Almost surely, 2^{20452342615251} is an apocalyptic number.

20452342615251 is a deficient number, since it is larger than the sum of its proper divisors (6846487647789).

20452342615251 is a wasteful number, since it uses less digits than its factorization.

20452342615251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246826.

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 20452342615251 in words is "twenty trillion, four hundred fifty-two billion, three hundred forty-two million, six hundred fifteen thousand, two hundred fifty-one".