45815781469 has 4 divisors (see below), whose sum is σ = 45821314396. Its totient is φ = 45810248544.

The previous prime is 45815781449. The next prime is 45815781481. The reversal of 45815781469 is 96418751854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96418751854 = 2 ⋅48209375927.

It can be written as a sum of positive squares in 2 ways, for example, as 18330452100 + 27485329369 = 135390^2 + 165787^2 .

It is a cyclic number.

It is not a de Polignac number, because 45815781469 - 2⁵ = 45815781437 is a prime.

It is a super-2 number, since 2×45815781469² (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 (45815781449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2754024 + ... + 2770609.

It is an arithmetic number, because the mean of its divisors is an integer number (11455328599).

Almost surely, 2^45815781469 is an apocalyptic number.

It is an amenable number.

45815781469 is a deficient number, since it is larger than the sum of its proper divisors (5532927).

45815781469 is an equidigital number, since it uses as much as digits as its factorization.

45815781469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532926.

The product of its digits is 9676800, while the sum is 58.

The spelling of 45815781469 in words is "forty-five billion, eight hundred fifteen million, seven hundred eighty-one thousand, four hundred sixty-nine".