745557597867 has 18 divisors (see below), whose sum is σ = 1008028438452. Its totient is φ = 490157866944.

The previous prime is 745557597857. The next prime is 745557597877. The reversal of 745557597867 is 768795755547.

It is an interprime number because it is at equal distance from previous prime (745557597857) and next prime (745557597877).

It is not a de Polignac number, because 745557597867 - 2⁶ = 745557597803 is a prime.

It is a super-2 number, since 2×745557597867² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (745557597817) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 109171809 + ... + 109178637.

It is an arithmetic number, because the mean of its divisors is an integer number (56001579914).

Almost surely, 2^745557597867 is an apocalyptic number.

745557597867 is a deficient number, since it is larger than the sum of its proper divisors (262470840585).

745557597867 is an frugal number, since it uses more digits than its factorization.

745557597867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13807 (or 6905 counting only the distinct ones).

The product of its digits is 2593080000, while the sum is 75.

Multiplying 745557597867 by its sum of digits (75), we get a square (55916819840025 = 7477755²).

The spelling of 745557597867 in words is "seven hundred forty-five billion, five hundred fifty-seven million, five hundred ninety-seven thousand, eight hundred sixty-seven".