7978753484 has 12 divisors (see below), whose sum is σ = 15036881664. Its totient is φ = 3682501584.

The previous prime is 7978753481. The next prime is 7978753493. The reversal of 7978753484 is 4843578797.

It is not an unprimeable number, because it can be changed into a prime (7978753481) 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, 76718732 + ... + 76718835.

It is an arithmetic number, because the mean of its divisors is an integer number (1253073472).

Almost surely, 2^7978753484 is an apocalyptic number.

It is an amenable number.

7978753484 is a deficient number, since it is larger than the sum of its proper divisors (7058128180).

7978753484 is a wasteful number, since it uses less digits than its factorization.

7978753484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153437584 (or 153437582 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 62.

The square root of 7978753484 is about 89323.8685010899. The cubic root of 7978753484 is about 1998.2278872720.

The spelling of 7978753484 in words is "seven billion, nine hundred seventy-eight million, seven hundred fifty-three thousand, four hundred eighty-four".