7945545889199 has 4 divisors (see below), whose sum is σ = 7993124008464. Its totient is φ = 7897967769936.

The previous prime is 7945545889189. The next prime is 7945545889271. The reversal of 7945545889199 is 9919885455497.

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

It is a cyclic number.

It is not a de Polignac number, because 7945545889199 - 2¹² = 7945545885103 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 (7945545889109) 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, 23789059382 + ... + 23789059715.

It is an arithmetic number, because the mean of its divisors is an integer number (1998281002116).

Almost surely, 2^{7945545889199} is an apocalyptic number.

7945545889199 is a deficient number, since it is larger than the sum of its proper divisors (47578119265).

7945545889199 is a wasteful number, since it uses less digits than its factorization.

7945545889199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47578119264.

The product of its digits is 5878656000, while the sum is 83.

The spelling of 7945545889199 in words is "seven trillion, nine hundred forty-five billion, five hundred forty-five million, eight hundred eighty-nine thousand, one hundred ninety-nine".