745656447319 has 16 divisors (see below), whose sum is σ = 860847330816. Its totient is φ = 632657282400.

The previous prime is 745656447307. The next prime is 745656447329. The reversal of 745656447319 is 913744656547.

It is a cyclic number.

It is not a de Polignac number, because 745656447319 - 2⁹ = 745656446807 is a prime.

It is a super-2 number, since 2×745656447319² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745656447329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660067 + ... + 1388164.

It is an arithmetic number, because the mean of its divisors is an integer number (53802958176).

Almost surely, 2^745656447319 is an apocalyptic number.

745656447319 is a deficient number, since it is larger than the sum of its proper divisors (115190883497).

745656447319 is a wasteful number, since it uses less digits than its factorization.

745656447319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048766.

The product of its digits is 76204800, while the sum is 61.

The spelling of 745656447319 in words is "seven hundred forty-five billion, six hundred fifty-six million, four hundred forty-seven thousand, three hundred nineteen".