7899690470400 has 396 divisors, whose sum is σ = 28397524801464. Its totient is φ = 2098176000000.

The previous prime is 7899690470341. The next prime is 7899690470447. The reversal of 7899690470400 is 40740969987.

7899690470400 is a `hidden beast` number, since 78 + 9 + 9 + 6 + 90 + 4 + 70 + 400 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 57762100 + ... + 57898700.

Almost surely, 2^{7899690470400} 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 7899690470400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14198762400732).

7899690470400 is an abundant number, since it is smaller than the sum of its proper divisors (20497834331064).

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

7899690470400 is a wasteful number, since it uses less digits than its factorization.

7899690470400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136888 (or 136862 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 7899690470400 in words is "seven trillion, eight hundred ninety-nine billion, six hundred ninety million, four hundred seventy thousand, four hundred".