7378615621680 has 80 divisors (see below), whose sum is σ = 24219220701024. Its totient is φ = 1851887841280.

The previous prime is 7378615621651. The next prime is 7378615621687. The reversal of 7378615621680 is 861265168737.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (7378615621687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904238031 + ... + 904246190.

Almost surely, 2^{7378615621680} is an apocalyptic number.

It is an amenable number.

7378615621680 is an abundant number, since it is smaller than the sum of its proper divisors (16840605079344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7378615621680 is a wasteful number, since it uses less digits than its factorization.

7378615621680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808484254 (or 1808484248 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 7378615621680 in words is "seven trillion, three hundred seventy-eight billion, six hundred fifteen million, six hundred twenty-one thousand, six hundred eighty".