7399478893680 has 200 divisors, whose sum is σ = 25708477766400. Its totient is φ = 1972504023552.

The previous prime is 7399478893673. The next prime is 7399478893693. The reversal of 7399478893680 is 863988749937.

7399478893680 is a `hidden beast` number, since 7 + 3 + 9 + 9 + 478 + 89 + 3 + 68 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 7399478893680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18457606 + ... + 18854234.

It is an arithmetic number, because the mean of its divisors is an integer number (128542388832).

Almost surely, 2^{7399478893680} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7399478893680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12854238883200).

7399478893680 is an abundant number, since it is smaller than the sum of its proper divisors (18308998872720).

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

7399478893680 is a wasteful number, since it uses less digits than its factorization.

7399478893680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399533 (or 399518 counting only the distinct ones).

The product of its (nonzero) digits is 3950456832, while the sum is 81.

The spelling of 7399478893680 in words is "seven trillion, three hundred ninety-nine billion, four hundred seventy-eight million, eight hundred ninety-three thousand, six hundred eighty".