138870874556353 has 4 divisors (see below), whose sum is σ = 139007963278548. Its totient is φ = 138733785834160.

The previous prime is 138870874556347. The next prime is 138870874556399. The reversal of 138870874556353 is 353655478078831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 333925646769 + 138536948909584 = 577863^2 + 11770172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138870874556353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138870874556653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68544359578 + ... + 68544361603.

It is an arithmetic number, because the mean of its divisors is an integer number (34751990819637).

Almost surely, 2^{138870874556353} is an apocalyptic number.

It is an amenable number.

138870874556353 is a deficient number, since it is larger than the sum of its proper divisors (137088722195).

138870874556353 is a wasteful number, since it uses less digits than its factorization.

138870874556353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137088722194.

The product of its (nonzero) digits is 2032128000, while the sum is 73.

The spelling of 138870874556353 in words is "one hundred thirty-eight trillion, eight hundred seventy billion, eight hundred seventy-four million, five hundred fifty-six thousand, three hundred fifty-three".