338225646978 has 32 divisors (see below), whose sum is σ = 754386059520. Its totient is φ = 112325855760.

The previous prime is 338225646959. The next prime is 338225647051. The reversal of 338225646978 is 879646522833.

It is a happy number.

338225646978 is a `hidden beast` number, since 3 + 3 + 8 + 2 + 2 + 564 + 69 + 7 + 8 = 666.

It is a super-2 number, since 2×338225646978² (a number of 24 digits) contains 22 as substring.

It is a Curzon 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, 11541525 + ... + 11570792.

It is an arithmetic number, because the mean of its divisors is an integer number (23574564360).

Almost surely, 2^338225646978 is an apocalyptic number.

338225646978 is an abundant number, since it is smaller than the sum of its proper divisors (416160412542).

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

338225646978 is a wasteful number, since it uses less digits than its factorization.

338225646978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23112599 (or 23112593 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 63.

The spelling of 338225646978 in words is "three hundred thirty-eight billion, two hundred twenty-five million, six hundred forty-six thousand, nine hundred seventy-eight".