138073863132736 has 14 divisors (see below), whose sum is σ = 273990322154150. Its totient is φ = 69036931566336.

The previous prime is 138073863132671. The next prime is 138073863132743. The reversal of 138073863132736 is 637231368370831.

It can be written as a sum of positive squares in only one way, i.e., 132754640486400 + 5319222646336 = 11521920^2 + 2306344^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078702055661 + ... + 1078702055788.

It is an arithmetic number, because the mean of its divisors is an integer number (19570737296725).

Almost surely, 2^{138073863132736} is an apocalyptic number.

138073863132736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138073863132736 is a deficient number, since it is larger than the sum of its proper divisors (135916459021414).

138073863132736 is an equidigital number, since it uses as much as digits as its factorization.

138073863132736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157404111461 (or 2157404111451 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 61.

The spelling of 138073863132736 in words is "one hundred thirty-eight trillion, seventy-three billion, eight hundred sixty-three million, one hundred thirty-two thousand, seven hundred thirty-six".