220777395869172 has 48 divisors (see below), whose sum is σ = 519484314347712. Its totient is φ = 72974795013120.

The previous prime is 220777395869153. The next prime is 220777395869197. The reversal of 220777395869172 is 271968593777022.

It is a junction number, because it is equal to n+sod(n) for n = 220777395869094 and 220777395869103.

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, 118408413 + ... + 120258500.

It is an arithmetic number, because the mean of its divisors is an integer number (10822589882244).

Almost surely, 2^{220777395869172} is an apocalyptic number.

It is an amenable number.

220777395869172 is an abundant number, since it is smaller than the sum of its proper divisors (298706918478540).

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

220777395869172 is a wasteful number, since it uses less digits than its factorization.

220777395869172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238667568 (or 238667566 counting only the distinct ones).

The product of its (nonzero) digits is 1120210560, while the sum is 75.

The spelling of 220777395869172 in words is "two hundred twenty trillion, seven hundred seventy-seven billion, three hundred ninety-five million, eight hundred sixty-nine thousand, one hundred seventy-two".