138669762840 has 192 divisors, whose sum is σ = 500617000800. Its totient is φ = 30602944512.

The previous prime is 138669762839. The next prime is 138669762853. The reversal of 138669762840 is 48267966831.

It is a super-2 number, since 2×138669762840² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236089 + ... + 577128.

Almost surely, 2^138669762840 is an apocalyptic number.

138669762840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138669762840 is an abundant number, since it is smaller than the sum of its proper divisors (361947237960).

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

138669762840 is a wasteful number, since it uses less digits than its factorization.

138669762840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813274 (or 813263 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 138669762840 in words is "one hundred thirty-eight billion, six hundred sixty-nine million, seven hundred sixty-two thousand, eight hundred forty".