372220335217 has 4 divisors (see below), whose sum is σ = 385055519220. Its totient is φ = 359385151216.

The previous prime is 372220335199. The next prime is 372220335239. The reversal of 372220335217 is 712533022273.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712533022273 = 283 ⋅2517784531.

It can be written as a sum of positive squares in 2 ways, for example, as 292065665761 + 80154669456 = 540431^2 + 283116^2 .

It is a cyclic number.

It is not a de Polignac number, because 372220335217 - 2¹⁵ = 372220302449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (372220335917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6417591958 + ... + 6417592015.

It is an arithmetic number, because the mean of its divisors is an integer number (96263879805).

Almost surely, 2^372220335217 is an apocalyptic number.

It is an amenable number.

372220335217 is a deficient number, since it is larger than the sum of its proper divisors (12835184003).

372220335217 is a wasteful number, since it uses less digits than its factorization.

372220335217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12835184002.

The product of its (nonzero) digits is 105840, while the sum is 37.

The spelling of 372220335217 in words is "three hundred seventy-two billion, two hundred twenty million, three hundred thirty-five thousand, two hundred seventeen".