20352589902840 has 128 divisors (see below), whose sum is σ = 67153553832960. Its totient is φ = 4903275323904.

The previous prime is 20352589902803. The next prime is 20352589902859. The reversal of 20352589902840 is 4820998525302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138719574 + ... + 138866213.

It is an arithmetic number, because the mean of its divisors is an integer number (524637139320).

Almost surely, 2^{20352589902840} is an apocalyptic number.

20352589902840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20352589902840 is an abundant number, since it is smaller than the sum of its proper divisors (46800963930120).

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

20352589902840 is a wasteful number, since it uses less digits than its factorization.

20352589902840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277585861 (or 277585857 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 57.

The spelling of 20352589902840 in words is "twenty trillion, three hundred fifty-two billion, five hundred eighty-nine million, nine hundred two thousand, eight hundred forty".