745356137491 has 8 divisors (see below), whose sum is σ = 852288945920. Its totient is φ = 638536669128.

The previous prime is 745356137489. The next prime is 745356137503. The reversal of 745356137491 is 194731653547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745356137491 - 2¹ = 745356137489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745356137891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28320921 + ... + 28347226.

It is an arithmetic number, because the mean of its divisors is an integer number (106536118240).

Almost surely, 2^745356137491 is an apocalyptic number.

745356137491 is a deficient number, since it is larger than the sum of its proper divisors (106932808429).

745356137491 is a wasteful number, since it uses less digits than its factorization.

745356137491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56670033.

The product of its digits is 9525600, while the sum is 55.

The spelling of 745356137491 in words is "seven hundred forty-five billion, three hundred fifty-six million, one hundred thirty-seven thousand, four hundred ninety-one".