45729644509 has 4 divisors (see below), whose sum is σ = 45753626304. Its totient is φ = 45705662716.

The previous prime is 45729644501. The next prime is 45729644531. The reversal of 45729644509 is 90544692754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90544692754 = 2 ⋅45272346377.

It is a cyclic number.

It is not a de Polignac number, because 45729644509 - 2³ = 45729644501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45729644509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45729644501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11988037 + ... + 11991850.

It is an arithmetic number, because the mean of its divisors is an integer number (11438406576).

Almost surely, 2^45729644509 is an apocalyptic number.

It is an amenable number.

45729644509 is a deficient number, since it is larger than the sum of its proper divisors (23981795).

45729644509 is a wasteful number, since it uses less digits than its factorization.

45729644509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23981794.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 45729644509 in words is "forty-five billion, seven hundred twenty-nine million, six hundred forty-four thousand, five hundred nine".