20291215344960 has 112 divisors (see below), whose sum is σ = 73628124276096. Its totient is φ = 4637992077312.

The previous prime is 20291215344949. The next prime is 20291215344997. The reversal of 20291215344960 is 6944351219202.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent 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, 1509756327 + ... + 1509769766.

Almost surely, 2^{20291215344960} is an apocalyptic number.

20291215344960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20291215344960 is an abundant number, since it is smaller than the sum of its proper divisors (53336908931136).

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

20291215344960 is a wasteful number, since it uses less digits than its factorization.

20291215344960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019526120 (or 3019526110 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 20291215344960 in words is "twenty trillion, two hundred ninety-one billion, two hundred fifteen million, three hundred forty-four thousand, nine hundred sixty".