7902749669678 has 4 divisors (see below), whose sum is σ = 11854124504520. Its totient is φ = 3951374834838.

The previous prime is 7902749669651. The next prime is 7902749669681. The reversal of 7902749669678 is 8769669472097.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×7902749669678² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975687417418 + ... + 1975687417421.

It is an arithmetic number, because the mean of its divisors is an integer number (2963531126130).

Almost surely, 2^{7902749669678} is an apocalyptic number.

7902749669678 is a deficient number, since it is larger than the sum of its proper divisors (3951374834842).

7902749669678 is a wasteful number, since it uses less digits than its factorization.

7902749669678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951374834841.

The product of its (nonzero) digits is 3456649728, while the sum is 80.

The spelling of 7902749669678 in words is "seven trillion, nine hundred two billion, seven hundred forty-nine million, six hundred sixty-nine thousand, six hundred seventy-eight".