7873521667126 has 4 divisors (see below), whose sum is σ = 11810282500692. Its totient is φ = 3936760833562.

The previous prime is 7873521667061. The next prime is 7873521667133. The reversal of 7873521667126 is 6217661253787.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1968380416780 + ... + 1968380416783.

It is an arithmetic number, because the mean of its divisors is an integer number (2952570625173).

Almost surely, 2^{7873521667126} is an apocalyptic number.

7873521667126 is a deficient number, since it is larger than the sum of its proper divisors (3936760833566).

7873521667126 is a wasteful number, since it uses less digits than its factorization.

7873521667126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936760833565.

The product of its digits is 35562240, while the sum is 61.

The spelling of 7873521667126 in words is "seven trillion, eight hundred seventy-three billion, five hundred twenty-one million, six hundred sixty-seven thousand, one hundred twenty-six".