745570811520 has 1792 divisors, whose sum is σ = 3045761844480. Its totient is φ = 173425950720.

The previous prime is 745570811477. The next prime is 745570811533. The reversal of 745570811520 is 25118075547.

745570811520 is a `hidden beast` number, since 7 + 4 + 55 + 70 + 8 + 1 + 1 + 520 = 666.

It is a super-3 number, since 3×745570811520³ (a number of 37 digits) contains 333 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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 11127922527 + ... + 11127922593.

Almost surely, 2^745570811520 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 745570811520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1522880922240).

745570811520 is an abundant number, since it is smaller than the sum of its proper divisors (2300191032960).

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

745570811520 is a wasteful number, since it uses less digits than its factorization.

745570811520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 45.

The spelling of 745570811520 in words is "seven hundred forty-five billion, five hundred seventy million, eight hundred eleven thousand, five hundred twenty".