21040079150220 has 48 divisors (see below), whose sum is σ = 63443930978400. Its totient is φ = 5179096406016.

The previous prime is 21040079150183. The next prime is 21040079150327. The reversal of 21040079150220 is 2205197004012.

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, 13487229445 + ... + 13487231004.

It is an arithmetic number, because the mean of its divisors is an integer number (1321748562050).

Almost surely, 2^{21040079150220} is an apocalyptic number.

21040079150220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21040079150220 is an abundant number, since it is smaller than the sum of its proper divisors (42403851828180).

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

21040079150220 is a wasteful number, since it uses less digits than its factorization.

21040079150220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26974460474 (or 26974460472 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 21040079150220 in words is "twenty-one trillion, forty billion, seventy-nine million, one hundred fifty thousand, two hundred twenty".