20389253960 has 64 divisors (see below), whose sum is σ = 48945409920. Its totient is φ = 7617326080.

The previous prime is 20389253933. The next prime is 20389254049. The reversal of 20389253960 is 6935298302.

It is a happy number.

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, 25364 + ... + 203523.

It is an arithmetic number, because the mean of its divisors is an integer number (764772030).

Almost surely, 2^20389253960 is an apocalyptic number.

20389253960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20389253960 is an abundant number, since it is smaller than the sum of its proper divisors (28556155960).

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

20389253960 is a wasteful number, since it uses less digits than its factorization.

20389253960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229046 (or 229042 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 20389253960 in words is "twenty billion, three hundred eighty-nine million, two hundred fifty-three thousand, nine hundred sixty".