745157477081 has 2 divisors, whose sum is σ = 745157477082. Its totient is φ = 745157477080.

The previous prime is 745157477059. The next prime is 745157477123. The reversal of 745157477081 is 180774751547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596694451600 + 148463025481 = 772460^2 + 385309^2 .

It is a cyclic number.

It is not a de Polignac number, because 745157477081 - 2¹⁰ = 745157476057 is a prime.

It is a super-2 number, since 2×745157477081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (745157477011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372578738540 + 372578738541.

It is an arithmetic number, because the mean of its divisors is an integer number (372578738541).

Almost surely, 2^745157477081 is an apocalyptic number.

It is an amenable number.

745157477081 is a deficient number, since it is larger than the sum of its proper divisors (1).

745157477081 is an equidigital number, since it uses as much as digits as its factorization.

745157477081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7683200, while the sum is 56.

The spelling of 745157477081 in words is "seven hundred forty-five billion, one hundred fifty-seven million, four hundred seventy-seven thousand, eighty-one".