7138123772485 has 8 divisors (see below), whose sum is σ = 8565777684216. Its totient is φ = 5710479579840.

The previous prime is 7138123772471. The next prime is 7138123772491. The reversal of 7138123772485 is 5842773218317.

It can be written as a sum of positive squares in 4 ways, for example, as 16281504801 + 7121842267684 = 127599^2 + 2668678^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7138123772485 - 2⁷ = 7138123772357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702346 + ... + 3843115.

It is an arithmetic number, because the mean of its divisors is an integer number (1070722210527).

Almost surely, 2^{7138123772485} is an apocalyptic number.

It is an amenable number.

7138123772485 is a deficient number, since it is larger than the sum of its proper divisors (1427653911731).

7138123772485 is a wasteful number, since it uses less digits than its factorization.

7138123772485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859543.

The product of its digits is 15805440, while the sum is 58.

The spelling of 7138123772485 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-three million, seven hundred seventy-two thousand, four hundred eighty-five".