20533231157344 has 12 divisors (see below), whose sum is σ = 40424798841084. Its totient is φ = 10266615578656.

The previous prime is 20533231157297. The next prime is 20533231157371. The reversal of 20533231157344 is 44375113233502.

It is a super-2 number, since 2×20533231157344² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20533231157344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320831736802 + ... + 320831736865.

It is an arithmetic number, because the mean of its divisors is an integer number (3368733236757).

Almost surely, 2^{20533231157344} is an apocalyptic number.

It is an amenable number.

20533231157344 is a deficient number, since it is larger than the sum of its proper divisors (19891567683740).

20533231157344 is an equidigital number, since it uses as much as digits as its factorization.

20533231157344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641663473677 (or 641663473669 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 20533231157344 in words is "twenty trillion, five hundred thirty-three billion, two hundred thirty-one million, one hundred fifty-seven thousand, three hundred forty-four".