7878206304992 has 48 divisors (see below), whose sum is σ = 15535904645520. Its totient is φ = 3932581251072.

The previous prime is 7878206304961. The next prime is 7878206305001. The reversal of 7878206304992 is 2994036028787.

It is a super-2 number, since 2×7878206304992² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214980623 + ... + 215017265.

It is an arithmetic number, because the mean of its divisors is an integer number (323664680115).

Almost surely, 2^{7878206304992} is an apocalyptic number.

It is an amenable number.

7878206304992 is a deficient number, since it is larger than the sum of its proper divisors (7657698340528).

7878206304992 is a wasteful number, since it uses less digits than its factorization.

7878206304992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47595 (or 47587 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 65.

The spelling of 7878206304992 in words is "seven trillion, eight hundred seventy-eight billion, two hundred six million, three hundred four thousand, nine hundred ninety-two".