20575293144 has 64 divisors (see below), whose sum is σ = 58797446400. Its totient is φ = 5877565824.

The previous prime is 20575293091. The next prime is 20575293191. The reversal of 20575293144 is 44139257502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 20575293096 and 20575293105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1477687 + ... + 1491545.

It is an arithmetic number, because the mean of its divisors is an integer number (918710100).

Almost surely, 2^20575293144 is an apocalyptic number.

20575293144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20575293144 is an abundant number, since it is smaller than the sum of its proper divisors (38222153256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20575293144 is a wasteful number, since it uses less digits than its factorization.

20575293144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22712 (or 22708 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 20575293144 in words is "twenty billion, five hundred seventy-five million, two hundred ninety-three thousand, one hundred forty-four".