45143478757 has 4 divisors (see below), whose sum is σ = 48616054060. Its totient is φ = 41670903456.

The previous prime is 45143478739. The next prime is 45143478761. The reversal of 45143478757 is 75787434154.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17741973601 + 27401505156 = 133199^2 + 165534^2 .

It is not a de Polignac number, because 45143478757 - 2¹¹ = 45143476709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45143478698 and 45143478707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45143478707) 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, 1736287632 + ... + 1736287657.

It is an arithmetic number, because the mean of its divisors is an integer number (12154013515).

Almost surely, 2^45143478757 is an apocalyptic number.

It is an amenable number.

45143478757 is a deficient number, since it is larger than the sum of its proper divisors (3472575303).

45143478757 is a wasteful number, since it uses less digits than its factorization.

45143478757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472575302.

The product of its digits is 13171200, while the sum is 55.

The spelling of 45143478757 in words is "forty-five billion, one hundred forty-three million, four hundred seventy-eight thousand, seven hundred fifty-seven".