745304532551 has 4 divisors (see below), whose sum is σ = 757522639704. Its totient is φ = 733086425400.

The previous prime is 745304532509. The next prime is 745304532569. The reversal of 745304532551 is 155235403547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155235403547 = 7 ⋅22176486221.

It is a cyclic number.

It is not a de Polignac number, because 745304532551 - 2²² = 745300338247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745304232551) 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, 6109053485 + ... + 6109053606.

It is an arithmetic number, because the mean of its divisors is an integer number (189380659926).

Almost surely, 2^745304532551 is an apocalyptic number.

745304532551 is a deficient number, since it is larger than the sum of its proper divisors (12218107153).

745304532551 is a wasteful number, since it uses less digits than its factorization.

745304532551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12218107152.

The product of its (nonzero) digits is 1260000, while the sum is 44.

The spelling of 745304532551 in words is "seven hundred forty-five billion, three hundred four million, five hundred thirty-two thousand, five hundred fifty-one".