368426778531 has 64 divisors (see below), whose sum is σ = 610224316416. Its totient is φ = 192912652800.

The previous prime is 368426778529. The next prime is 368426778541. The reversal of 368426778531 is 135877624863.

It is a happy number.

It is not a de Polignac number, because 368426778531 - 2¹ = 368426778529 is a prime.

It is a super-2 number, since 2×368426778531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (368426778541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4735576 + ... + 4812746.

It is an arithmetic number, because the mean of its divisors is an integer number (9534754944).

Almost surely, 2^368426778531 is an apocalyptic number.

368426778531 is a deficient number, since it is larger than the sum of its proper divisors (241797537885).

368426778531 is a wasteful number, since it uses less digits than its factorization.

368426778531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77552.

The product of its digits is 40642560, while the sum is 60.

The spelling of 368426778531 in words is "three hundred sixty-eight billion, four hundred twenty-six million, seven hundred seventy-eight thousand, five hundred thirty-one".