220478207765064 has 64 divisors (see below), whose sum is σ = 552900858128640. Its totient is φ = 73265708605440.

The previous prime is 220478207765041. The next prime is 220478207765111. The reversal of 220478207765064 is 460567702874022.

It is a super-2 number, since 2×220478207765064² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220478207764989 and 220478207765007.

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, 927952 + ... + 21019455.

It is an arithmetic number, because the mean of its divisors is an integer number (8639075908260).

Almost surely, 2^{220478207765064} is an apocalyptic number.

220478207765064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220478207765064 is an abundant number, since it is smaller than the sum of its proper divisors (332422650363576).

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

220478207765064 is a wasteful number, since it uses less digits than its factorization.

220478207765064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21948710 (or 21948706 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 60.

The spelling of 220478207765064 in words is "two hundred twenty trillion, four hundred seventy-eight billion, two hundred seven million, seven hundred sixty-five thousand, sixty-four".