745770070731 has 32 divisors (see below), whose sum is σ = 1163018672640. Its totient is φ = 416179701504.

The previous prime is 745770070667. The next prime is 745770070789. The reversal of 745770070731 is 137070077547.

It is not a de Polignac number, because 745770070731 - 2⁶ = 745770070667 is a prime.

It is a super-2 number, since 2×745770070731² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (745770050731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6142591 + ... + 6262823.

It is an arithmetic number, because the mean of its divisors is an integer number (36344333520).

Almost surely, 2^745770070731 is an apocalyptic number.

745770070731 is a deficient number, since it is larger than the sum of its proper divisors (417248601909).

745770070731 is a wasteful number, since it uses less digits than its factorization.

745770070731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127155.

The product of its (nonzero) digits is 1008420, while the sum is 48.

The spelling of 745770070731 in words is "seven hundred forty-five billion, seven hundred seventy million, seventy thousand, seven hundred thirty-one".