45994167891 has 12 divisors (see below), whose sum is σ = 75926880432. Its totient is φ = 26282381616.

The previous prime is 45994167847. The next prime is 45994167911. The reversal of 45994167891 is 19876149954.

45994167891 is a `hidden beast` number, since 45 + 99 + 416 + 7 + 8 + 91 = 666.

It is not a de Polignac number, because 45994167891 - 2⁶ = 45994167827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 730066157 = 45994167891 / (4 + 5 + 9 + 9 + 4 + 1 + 6 + 7 + 8 + 9 + 1).

It is not an unprimeable number, because it can be changed into a prime (45994167091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365033016 + ... + 365033141.

It is an arithmetic number, because the mean of its divisors is an integer number (6327240036).

Almost surely, 2^45994167891 is an apocalyptic number.

45994167891 is a deficient number, since it is larger than the sum of its proper divisors (29932712541).

45994167891 is a wasteful number, since it uses less digits than its factorization.

45994167891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730066170 (or 730066167 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 45994167891 in words is "forty-five billion, nine hundred ninety-four million, one hundred sixty-seven thousand, eight hundred ninety-one".