138824004226778 has 16 divisors (see below), whose sum is σ = 224254694815200. Its totient is φ = 64072464723696.

The previous prime is 138824004226757. The next prime is 138824004226903. The reversal of 138824004226778 is 877622400428831.

It is a super-2 number, since 2×138824004226778² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138824004226778.

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, 5160701 + ... + 17443647.

It is an arithmetic number, because the mean of its divisors is an integer number (14015918425950).

Almost surely, 2^{138824004226778} is an apocalyptic number.

138824004226778 is a deficient number, since it is larger than the sum of its proper divisors (85430690588422).

138824004226778 is a wasteful number, since it uses less digits than its factorization.

138824004226778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12717661.

The product of its (nonzero) digits is 57802752, while the sum is 62.

The spelling of 138824004226778 in words is "one hundred thirty-eight trillion, eight hundred twenty-four billion, four million, two hundred twenty-six thousand, seven hundred seventy-eight".