20873575351522 has 64 divisors (see below), whose sum is σ = 33120815210496. Its totient is φ = 9846635198400.

The previous prime is 20873575351511. The next prime is 20873575351561. The reversal of 20873575351522 is 22515357537802.

It is a happy number.

It is a super-2 number, since 2×20873575351522² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 1235041272 + ... + 1235058172.

It is an arithmetic number, because the mean of its divisors is an integer number (517512737664).

Almost surely, 2^{20873575351522} is an apocalyptic number.

20873575351522 is a deficient number, since it is larger than the sum of its proper divisors (12247239858974).

20873575351522 is a wasteful number, since it uses less digits than its factorization.

20873575351522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18055.

The product of its (nonzero) digits is 17640000, while the sum is 55.

The spelling of 20873575351522 in words is "twenty trillion, eight hundred seventy-three billion, five hundred seventy-five million, three hundred fifty-one thousand, five hundred twenty-two".