220688153656472 has 8 divisors (see below), whose sum is σ = 413790288105900. Its totient is φ = 110344076828232.

The previous prime is 220688153656471. The next prime is 220688153656511. The reversal of 220688153656472 is 274656351886022.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×220688153656472² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220688153656399 and 220688153656408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220688153656471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13793009603522 + ... + 13793009603537.

Almost surely, 2^{220688153656472} is an apocalyptic number.

It is an amenable number.

220688153656472 is a deficient number, since it is larger than the sum of its proper divisors (193102134449428).

220688153656472 is a wasteful number, since it uses less digits than its factorization.

220688153656472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27586019207065 (or 27586019207061 counting only the distinct ones).

The product of its (nonzero) digits is 232243200, while the sum is 65.

The spelling of 220688153656472 in words is "two hundred twenty trillion, six hundred eighty-eight billion, one hundred fifty-three million, six hundred fifty-six thousand, four hundred seventy-two".