20459725949040 has 320 divisors, whose sum is σ = 77801136408576. Its totient is φ = 4341126168576.

The previous prime is 20459725948999. The next prime is 20459725949083. The reversal of 20459725949040 is 4094952795402.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2821812 + ... + 6991571.

Almost surely, 2^{20459725949040} is an apocalyptic number.

20459725949040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20459725949040 is an abundant number, since it is smaller than the sum of its proper divisors (57341410459536).

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

20459725949040 is a wasteful number, since it uses less digits than its factorization.

20459725949040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9813496 (or 9813490 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 20459725949040 in words is "twenty trillion, four hundred fifty-nine billion, seven hundred twenty-five million, nine hundred forty-nine thousand, forty".