7999945055 has 16 divisors (see below), whose sum is σ = 9768812544. Its totient is φ = 6287872800.

The previous prime is 7999945049. The next prime is 7999945067. The reversal of 7999945055 is 5505499997.

It is a happy number.

It is not a de Polignac number, because 7999945055 - 2⁶ = 7999944991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97130 + ... + 159480.

It is an arithmetic number, because the mean of its divisors is an integer number (610550784).

Almost surely, 2^7999945055 is an apocalyptic number.

7999945055 is a deficient number, since it is larger than the sum of its proper divisors (1768867489).

7999945055 is a wasteful number, since it uses less digits than its factorization.

7999945055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62806.

The product of its (nonzero) digits is 22963500, while the sum is 62.

The square root of 7999945055 is about 89442.4119475766. The cubic root of 7999945055 is about 1999.9954212395.

The spelling of 7999945055 in words is "seven billion, nine hundred ninety-nine million, nine hundred forty-five thousand, fifty-five".