20023303374440 has 32 divisors (see below), whose sum is σ = 45064902453480. Its totient is φ = 8007104485632.

The previous prime is 20023303374419. The next prime is 20023303374457. The reversal of 20023303374440 is 4447330332002.

It can be written as a sum of positive squares in 4 ways, for example, as 3933946962724 + 16089356411716 = 1983418^2 + 4011154^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20023303374440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69130679 + ... + 69419718.

Almost surely, 2^{20023303374440} is an apocalyptic number.

20023303374440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023303374440 is an abundant number, since it is smaller than the sum of its proper divisors (25041599079040).

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

20023303374440 is a wasteful number, since it uses less digits than its factorization.

20023303374440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138554021 (or 138554017 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 35.

The spelling of 20023303374440 in words is "twenty trillion, twenty-three billion, three hundred three million, three hundred seventy-four thousand, four hundred forty".