7321874196521 has 8 divisors (see below), whose sum is σ = 7370691479424. Its totient is φ = 7273116124960.

The previous prime is 7321874196491. The next prime is 7321874196547. The reversal of 7321874196521 is 1256914781237.

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

It is a cyclic number.

It is not a de Polignac number, because 7321874196521 - 2⁶ = 7321874196457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7321874196551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14554685 + ... + 15049338.

It is an arithmetic number, because the mean of its divisors is an integer number (921336434928).

Almost surely, 2^{7321874196521} is an apocalyptic number.

It is an amenable number.

7321874196521 is a deficient number, since it is larger than the sum of its proper divisors (48817282903).

7321874196521 is a wasteful number, since it uses less digits than its factorization.

7321874196521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29605671.

The product of its digits is 5080320, while the sum is 56.

The spelling of 7321874196521 in words is "seven trillion, three hundred twenty-one billion, eight hundred seventy-four million, one hundred ninety-six thousand, five hundred twenty-one".