20344545601531 has 8 divisors (see below), whose sum is σ = 20941009920000. Its totient is φ = 19754898018408.

The previous prime is 20344545601489. The next prime is 20344545601547. The reversal of 20344545601531 is 13510654544302.

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 20344545601531 - 2²⁵ = 20344512047099 is a prime.

It is a super-2 number, since 2×20344545601531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344545601591) 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, 1704177781 + ... + 1704189718.

It is an arithmetic number, because the mean of its divisors is an integer number (2617626240000).

Almost surely, 2^{20344545601531} is an apocalyptic number.

20344545601531 is a deficient number, since it is larger than the sum of its proper divisors (596464318469).

20344545601531 is a wasteful number, since it uses less digits than its factorization.

20344545601531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408367673.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 20344545601531 in words is "twenty trillion, three hundred forty-four billion, five hundred forty-five million, six hundred one thousand, five hundred thirty-one".