745263387408 has 80 divisors (see below), whose sum is σ = 1942698266496. Its totient is φ = 246172416000.

The previous prime is 745263387403. The next prime is 745263387419. The reversal of 745263387408 is 804783362547.

It is a super-2 number, since 2×745263387408² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (745263387403) 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, 34252533 + ... + 34274283.

Almost surely, 2^745263387408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745263387408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971349133248).

745263387408 is an abundant number, since it is smaller than the sum of its proper divisors (1197434879088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745263387408 is a wasteful number, since it uses less digits than its factorization.

745263387408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28192 (or 28186 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 57.

The spelling of 745263387408 in words is "seven hundred forty-five billion, two hundred sixty-three million, three hundred eighty-seven thousand, four hundred eight".