45170940091 has 16 divisors (see below), whose sum is σ = 49916913984. Its totient is φ = 40657757184.

The previous prime is 45170940077. The next prime is 45170940109. The reversal of 45170940091 is 19004907154.

45170940091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 45170940091 - 2⁹ = 45170939579 is a prime.

It is a super-2 number, since 2×45170940091² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45170940041) 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, 3644581 + ... + 3656953.

It is an arithmetic number, because the mean of its divisors is an integer number (3119807124).

Almost surely, 2^45170940091 is an apocalyptic number.

45170940091 is a deficient number, since it is larger than the sum of its proper divisors (4745973893).

45170940091 is a wasteful number, since it uses less digits than its factorization.

45170940091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21750.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 45170940091 in words is "forty-five billion, one hundred seventy million, nine hundred forty thousand, ninety-one".