7990912145 has 8 divisors (see below), whose sum is σ = 9589574400. Its totient is φ = 6392409840.

The previous prime is 7990912141. The next prime is 7990912147. The reversal of 7990912145 is 5412190997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7990912145 - 2² = 7990912141 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7990912145.

It is not an unprimeable number, because it can be changed into a prime (7990912141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175610 + ... + 216380.

It is an arithmetic number, because the mean of its divisors is an integer number (1198696800).

Almost surely, 2^7990912145 is an apocalyptic number.

It is an amenable number.

7990912145 is a deficient number, since it is larger than the sum of its proper divisors (1598662255).

7990912145 is a wasteful number, since it uses less digits than its factorization.

7990912145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79975.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 7990912145 is about 89391.9020101933. The cubic root of 7990912145 is about 1999.2423918011.

The spelling of 7990912145 in words is "seven billion, nine hundred ninety million, nine hundred twelve thousand, one hundred forty-five".