745137913520 has 960 divisors, whose sum is σ = 2428620558336. Its totient is φ = 206338129920.

The previous prime is 745137913517. The next prime is 745137913543. The reversal of 745137913520 is 25319731547.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4746101282 + ... + 4746101438.

Almost surely, 2^745137913520 is an apocalyptic number.

745137913520 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 745137913520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1214310279168).

745137913520 is an abundant number, since it is smaller than the sum of its proper divisors (1683482644816).

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

745137913520 is a wasteful number, since it uses less digits than its factorization.

745137913520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 745137913520 in words is "seven hundred forty-five billion, one hundred thirty-seven million, nine hundred thirteen thousand, five hundred twenty".