945907199999 has 4 divisors (see below), whose sum is σ = 945917309664. Its totient is φ = 945897090336.

The previous prime is 945907199989. The next prime is 945907200041. The reversal of 945907199999 is 999991709549.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945907199999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945907199989) 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, 4913162 + ... + 5102055.

It is an arithmetic number, because the mean of its divisors is an integer number (236479327416).

Almost surely, 2^945907199999 is an apocalyptic number.

945907199999 is a deficient number, since it is larger than the sum of its proper divisors (10109665).

945907199999 is a wasteful number, since it uses less digits than its factorization.

945907199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10109664.

The product of its (nonzero) digits is 669615660, while the sum is 80.

The spelling of 945907199999 in words is "nine hundred forty-five billion, nine hundred seven million, one hundred ninety-nine thousand, nine hundred ninety-nine".