745705375839 has 24 divisors (see below), whose sum is σ = 1117646209680. Its totient is φ = 478714157568.

The previous prime is 745705375801. The next prime is 745705375841. The reversal of 745705375839 is 938573507547.

745705375839 is a `hidden beast` number, since 7 + 4 + 570 + 5 + 3 + 7 + 58 + 3 + 9 = 666.

745705375839 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 745705375839 - 2¹³ = 745705367647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745705375889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11510769 + ... + 11575370.

It is an arithmetic number, because the mean of its divisors is an integer number (46568592070).

Almost surely, 2^745705375839 is an apocalyptic number.

745705375839 is a deficient number, since it is larger than the sum of its proper divisors (371940833841).

745705375839 is a wasteful number, since it uses less digits than its factorization.

745705375839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23086279 (or 23086276 counting only the distinct ones).

The product of its (nonzero) digits is 111132000, while the sum is 63.

The spelling of 745705375839 in words is "seven hundred forty-five billion, seven hundred five million, three hundred seventy-five thousand, eight hundred thirty-nine".