45246577581 has 6 divisors (see below), whose sum is σ = 65356167630. Its totient is φ = 30164385048.

The previous prime is 45246577547. The next prime is 45246577591. The reversal of 45246577581 is 18577564254.

It is a happy number.

45246577581 is a `hidden beast` number, since 4 + 5 + 2 + 4 + 6 + 57 + 7 + 581 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42483393225 + 2763184356 = 206115^2 + 52566^2 .

It is not a de Polignac number, because 45246577581 - 2¹⁴ = 45246561197 is a prime.

It is a super-2 number, since 2×45246577581² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45246577531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2513698746 + ... + 2513698763.

It is an arithmetic number, because the mean of its divisors is an integer number (10892694605).

Almost surely, 2^45246577581 is an apocalyptic number.

It is an amenable number.

45246577581 is a deficient number, since it is larger than the sum of its proper divisors (20109590049).

45246577581 is a wasteful number, since it uses less digits than its factorization.

45246577581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027397515 (or 5027397512 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 54.

The spelling of 45246577581 in words is "forty-five billion, two hundred forty-six million, five hundred seventy-seven thousand, five hundred eighty-one".