138795969513652 has 36 divisors (see below), whose sum is σ = 267444210124420. Its totient is φ = 62979737103360.

The previous prime is 138795969513631. The next prime is 138795969513653. The reversal of 138795969513652 is 256315969597831.

It can be written as a sum of positive squares in 2 ways, for example, as 119745834808336 + 19050134705316 = 10942844^2 + 4364646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138795969513653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248220327 + ... + 248778862.

Almost surely, 2^{138795969513652} is an apocalyptic number.

It is an amenable number.

138795969513652 is a deficient number, since it is larger than the sum of its proper divisors (128648240610768).

138795969513652 is a wasteful number, since it uses less digits than its factorization.

138795969513652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496999792 (or 496999779 counting only the distinct ones).

The product of its digits is 3306744000, while the sum is 79.

The spelling of 138795969513652 in words is "one hundred thirty-eight trillion, seven hundred ninety-five billion, nine hundred sixty-nine million, five hundred thirteen thousand, six hundred fifty-two".