7138121748506 has 32 divisors (see below), whose sum is σ = 12956776889472. Its totient is φ = 2879201018880.

The previous prime is 7138121748481. The next prime is 7138121748623. The reversal of 7138121748506 is 6058471218317.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20601065 + ... + 20944691.

It is an arithmetic number, because the mean of its divisors is an integer number (404899277796).

Almost surely, 2^{7138121748506} is an apocalyptic number.

7138121748506 is a deficient number, since it is larger than the sum of its proper divisors (5818655140966).

7138121748506 is a wasteful number, since it uses less digits than its factorization.

7138121748506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430934.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 7138121748506 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-one million, seven hundred forty-eight thousand, five hundred six".