45066787581 has 64 divisors (see below), whose sum is σ = 65250791424. Its totient is φ = 27595814400.

The previous prime is 45066787567. The next prime is 45066787621. The reversal of 45066787581 is 18578766054.

It is a happy number.

It is not a de Polignac number, because 45066787581 - 2⁷ = 45066787453 is a prime.

It is a super-2 number, since 2×45066787581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45066787541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61482291 + ... + 61483023.

It is an arithmetic number, because the mean of its divisors is an integer number (1019543616).

Almost surely, 2^45066787581 is an apocalyptic number.

45066787581 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45066787581 is a deficient number, since it is larger than the sum of its proper divisors (20184003843).

45066787581 is a wasteful number, since it uses less digits than its factorization.

45066787581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114.

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 45066787581 in words is "forty-five billion, sixty-six million, seven hundred eighty-seven thousand, five hundred eighty-one".