138692142620 has 12 divisors (see below), whose sum is σ = 291253499544. Its totient is φ = 55476857040.

The previous prime is 138692142613. The next prime is 138692142637. The reversal of 138692142620 is 26241296831.

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, 3467303546 + ... + 3467303585.

It is an arithmetic number, because the mean of its divisors is an integer number (24271124962).

Almost surely, 2^138692142620 is an apocalyptic number.

138692142620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138692142620 is an abundant number, since it is smaller than the sum of its proper divisors (152561356924).

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

138692142620 is a wasteful number, since it uses less digits than its factorization.

138692142620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6934607140 (or 6934607138 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 138692142620 in words is "one hundred thirty-eight billion, six hundred ninety-two million, one hundred forty-two thousand, six hundred twenty".