7678081984 has 28 divisors (see below), whose sum is σ = 15727688128. Its totient is φ = 3715200000.

The previous prime is 7678081981. The next prime is 7678081987. The reversal of 7678081984 is 4891808767.

It is an interprime number because it is at equal distance from previous prime (7678081981) and next prime (7678081987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7678081981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1933017 + ... + 1936984.

Almost surely, 2^7678081984 is an apocalyptic number.

It is an amenable number.

7678081984 is an abundant number, since it is smaller than the sum of its proper divisors (8049606144).

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

7678081984 is a wasteful number, since it uses less digits than its factorization.

7678081984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870044 (or 3870034 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 58.

The square root of 7678081984 is about 87624.6653859517. The cubic root of 7678081984 is about 1972.8054015459.

The spelling of 7678081984 in words is "seven billion, six hundred seventy-eight million, eighty-one thousand, nine hundred eighty-four".