20445024666413 has 32 divisors (see below), whose sum is σ = 23323091208192. Its totient is φ = 17807784192000.

The previous prime is 20445024666383. The next prime is 20445024666421. The reversal of 20445024666413 is 31466642054402.

It is a cyclic number.

It is not a de Polignac number, because 20445024666413 - 2¹² = 20445024662317 is a prime.

It is a super-2 number, since 2×20445024666413² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445024666463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51352313 + ... + 51748913.

It is an arithmetic number, because the mean of its divisors is an integer number (728846600256).

Almost surely, 2^{20445024666413} is an apocalyptic number.

20445024666413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20445024666413 is a deficient number, since it is larger than the sum of its proper divisors (2878066541779).

20445024666413 is a wasteful number, since it uses less digits than its factorization.

20445024666413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400925.

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 20445024666413 in words is "twenty trillion, four hundred forty-five billion, twenty-four million, six hundred sixty-six thousand, four hundred thirteen".