138966673545 has 192 divisors, whose sum is σ = 292556759040. Its totient is φ = 61962962688.

The previous prime is 138966673513. The next prime is 138966673561. The reversal of 138966673545 is 545376669831.

It is not a de Polignac number, because 138966673545 - 2⁵ = 138966673513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 203464774 + ... + 203465456.

It is an arithmetic number, because the mean of its divisors is an integer number (1523733120).

Almost surely, 2^138966673545 is an apocalyptic number.

138966673545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138966673545 is an abundant number, since it is smaller than the sum of its proper divisors (153590085495).

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

138966673545 is an equidigital number, since it uses as much as digits as its factorization.

138966673545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266 (or 1254 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 138966673545 in words is "one hundred thirty-eight billion, nine hundred sixty-six million, six hundred seventy-three thousand, five hundred forty-five".