7998040512 has 168 divisors, whose sum is σ = 28581900672. Its totient is φ = 2077401600.

The previous prime is 7998040459. The next prime is 7998040553. The reversal of 7998040512 is 2150408997.

7998040512 is a `hidden beast` number, since 7 + 9 + 98 + 0 + 40 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45814 + ... + 134517.

Almost surely, 2^7998040512 is an apocalyptic number.

7998040512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7998040512 is an abundant number, since it is smaller than the sum of its proper divisors (20583860160).

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

7998040512 is a wasteful number, since it uses less digits than its factorization.

7998040512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180367 (or 180354 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 7998040512 is about 89431.7645582374. The cubic root of 7998040512 is about 1999.8366959996.

The spelling of 7998040512 in words is "seven billion, nine hundred ninety-eight million, forty thousand, five hundred twelve".