20626442602440 has 64 divisors (see below), whose sum is σ = 64569733372800. Its totient is φ = 5261237532672.

The previous prime is 20626442602429. The next prime is 20626442602471. The reversal of 20626442602440 is 4420624462602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20626442602392 and 20626442602401.

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, 3736671625 + ... + 3736677144.

It is an arithmetic number, because the mean of its divisors is an integer number (1008902083950).

Almost surely, 2^{20626442602440} is an apocalyptic number.

20626442602440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20626442602440 is an abundant number, since it is smaller than the sum of its proper divisors (43943290770360).

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

20626442602440 is a wasteful number, since it uses less digits than its factorization.

20626442602440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7473348806 (or 7473348802 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 20626442602440 in words is "twenty trillion, six hundred twenty-six billion, four hundred forty-two million, six hundred two thousand, four hundred forty".