45193779191 has 16 divisors (see below), whose sum is σ = 51023001600. Its totient is φ = 39652485600.

The previous prime is 45193779181. The next prime is 45193779193. The reversal of 45193779191 is 19197739154.

It is a cyclic number.

It is not a de Polignac number, because 45193779191 - 2³⁴ = 28013910007 is a prime.

It is a super-2 number, since 2×45193779191² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45193779193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799190 + ... + 853868.

It is an arithmetic number, because the mean of its divisors is an integer number (3188937600).

Almost surely, 2^45193779191 is an apocalyptic number.

45193779191 is a deficient number, since it is larger than the sum of its proper divisors (5829222409).

45193779191 is a wasteful number, since it uses less digits than its factorization.

45193779191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57310.

The product of its digits is 2143260, while the sum is 56.

The spelling of 45193779191 in words is "forty-five billion, one hundred ninety-three million, seven hundred seventy-nine thousand, one hundred ninety-one".