138451177848 has 16 divisors (see below), whose sum is σ = 346127944680. Its totient is φ = 46150392608.

The previous prime is 138451177831. The next prime is 138451177871. The reversal of 138451177848 is 848771154831.

It is a super-2 number, since 2×138451177848² (a number of 23 digits) contains 22 as substring.

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, 2884399515 + ... + 2884399562.

Almost surely, 2^138451177848 is an apocalyptic number.

It is an amenable number.

138451177848 is an abundant number, since it is smaller than the sum of its proper divisors (207676766832).

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

138451177848 is a wasteful number, since it uses less digits than its factorization.

138451177848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5768799086 (or 5768799082 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 57.

The spelling of 138451177848 in words is "one hundred thirty-eight billion, four hundred fifty-one million, one hundred seventy-seven thousand, eight hundred forty-eight".