623155202378216 has 32 divisors (see below), whose sum is σ = 1169560002861000. Its totient is φ = 311272573280256.

The previous prime is 623155202378197. The next prime is 623155202378237. The reversal of 623155202378216 is 612873202551326.

It can be written as a sum of positive squares in 4 ways, for example, as 569459282315716 + 53695920062500 = 23863346^2 + 7327750^2 .

It is a super-2 number, since 2×623155202378216² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128102600 + ... + 132878088.

Almost surely, 2^{623155202378216} is an apocalyptic number.

It is an amenable number.

623155202378216 is a deficient number, since it is larger than the sum of its proper divisors (546404800482784).

623155202378216 is a wasteful number, since it uses less digits than its factorization.

623155202378216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4791461 (or 4791457 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 623155202378216 in words is "six hundred twenty-three trillion, one hundred fifty-five billion, two hundred two million, three hundred seventy-eight thousand, two hundred sixteen".