20265870453631 has 8 divisors (see below), whose sum is σ = 22108832176464. Its totient is φ = 18423010374720.

The previous prime is 20265870453629. The next prime is 20265870453691. The reversal of 20265870453631 is 13635407856202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20265870453631 - 2¹ = 20265870453629 is a prime.

It is a super-2 number, since 2×20265870453631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20265870453691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24993790 + ... + 25791883.

It is an arithmetic number, because the mean of its divisors is an integer number (2763604022058).

Almost surely, 2^{20265870453631} is an apocalyptic number.

20265870453631 is a deficient number, since it is larger than the sum of its proper divisors (1842961722833).

20265870453631 is a wasteful number, since it uses less digits than its factorization.

20265870453631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50821961.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 20265870453631 in words is "twenty trillion, two hundred sixty-five billion, eight hundred seventy million, four hundred fifty-three thousand, six hundred thirty-one".