7978146883830 has 96 divisors (see below), whose sum is σ = 21974005029600. Its totient is φ = 2002693994496.

The previous prime is 7978146883813. The next prime is 7978146883843. The reversal of 7978146883830 is 383886418797.

7978146883830 is a `hidden beast` number, since 7 + 9 + 7 + 8 + 1 + 468 + 83 + 83 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14590075 + ... + 15127014.

It is an arithmetic number, because the mean of its divisors is an integer number (228895885725).

Almost surely, 2^{7978146883830} is an apocalyptic number.

7978146883830 is an abundant number, since it is smaller than the sum of its proper divisors (13995858145770).

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

7978146883830 is a wasteful number, since it uses less digits than its factorization.

7978146883830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29717278 (or 29717275 counting only the distinct ones).

The product of its (nonzero) digits is 390168576, while the sum is 72.

The spelling of 7978146883830 in words is "seven trillion, nine hundred seventy-eight billion, one hundred forty-six million, eight hundred eighty-three thousand, eight hundred thirty".