745655928631 has 4 divisors (see below), whose sum is σ = 745659085752. Its totient is φ = 745652771512.

The previous prime is 745655928623. The next prime is 745655928697. The reversal of 745655928631 is 136829556547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 745655928631 - 2³ = 745655928623 is a prime.

It is a super-2 number, since 2×745655928631² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745655928631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745655928331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1192876 + ... + 1707121.

It is an arithmetic number, because the mean of its divisors is an integer number (186414771438).

Almost surely, 2^745655928631 is an apocalyptic number.

745655928631 is a deficient number, since it is larger than the sum of its proper divisors (3157121).

745655928631 is a wasteful number, since it uses less digits than its factorization.

745655928631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157120.

The product of its digits is 54432000, while the sum is 61.

The spelling of 745655928631 in words is "seven hundred forty-five billion, six hundred fifty-five million, nine hundred twenty-eight thousand, six hundred thirty-one".