745236571251620 has 144 divisors (see below), whose sum is σ = 1884869242280640. Its totient is φ = 246491157701376.

The previous prime is 745236571251619. The next prime is 745236571251647. The reversal of 745236571251620 is 26152175632547.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22688939 + ... + 44780141.

It is an arithmetic number, because the mean of its divisors is an integer number (13089369738060).

Almost surely, 2^{745236571251620} is an apocalyptic number.

745236571251620 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745236571251620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942434621140320).

745236571251620 is an abundant number, since it is smaller than the sum of its proper divisors (1139632671029020).

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

745236571251620 is a wasteful number, since it uses less digits than its factorization.

745236571251620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22092442 (or 22092433 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 56.

The spelling of 745236571251620 in words is "seven hundred forty-five trillion, two hundred thirty-six billion, five hundred seventy-one million, two hundred fifty-one thousand, six hundred twenty".