138326761078 has 8 divisors (see below), whose sum is σ = 226352881800. Its totient is φ = 62875800480.

The previous prime is 138326761063. The next prime is 138326761087. The reversal of 138326761078 is 870167623831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3143790003 + ... + 3143790046.

It is an arithmetic number, because the mean of its divisors is an integer number (28294110225).

Almost surely, 2^138326761078 is an apocalyptic number.

138326761078 is a deficient number, since it is larger than the sum of its proper divisors (88026120722).

138326761078 is a wasteful number, since it uses less digits than its factorization.

138326761078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287580062.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 138326761078 in words is "one hundred thirty-eight billion, three hundred twenty-six million, seven hundred sixty-one thousand, seventy-eight".