745754312520 has 192 divisors, whose sum is σ = 2844808312320. Its totient is φ = 165851131392.

The previous prime is 745754312507. The next prime is 745754312561. The reversal of 745754312520 is 25213457547.

745754312520 is a `hidden beast` number, since 7 + 4 + 5 + 75 + 43 + 12 + 520 = 666.

It is a super-2 number, since 2×745754312520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 3905872 + ... + 4092351.

It is an arithmetic number, because the mean of its divisors is an integer number (14816709960).

Almost surely, 2^745754312520 is an apocalyptic number.

745754312520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

745754312520 is an abundant number, since it is smaller than the sum of its proper divisors (2099053999800).

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

745754312520 is a wasteful number, since it uses less digits than its factorization.

745754312520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7998284 (or 7998277 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 45.

The spelling of 745754312520 in words is "seven hundred forty-five billion, seven hundred fifty-four million, three hundred twelve thousand, five hundred twenty".