20323155244560 has 160 divisors (see below), whose sum is σ = 72379010875392. Its totient is φ = 4620971650560.

The previous prime is 20323155244541. The next prime is 20323155244571. The reversal of 20323155244560 is 6544255132302.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 31346964 + ... + 31988723.

Almost surely, 2^{20323155244560} is an apocalyptic number.

20323155244560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20323155244560 is an abundant number, since it is smaller than the sum of its proper divisors (52055855630832).

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

20323155244560 is a wasteful number, since it uses less digits than its factorization.

20323155244560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63335901 (or 63335895 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 20323155244560 in words is "twenty trillion, three hundred twenty-three billion, one hundred fifty-five million, two hundred forty-four thousand, five hundred sixty".