745006521580 has 48 divisors (see below), whose sum is σ = 1601370406944. Its totient is φ = 290986375680.

The previous prime is 745006521569. The next prime is 745006521593. The reversal of 745006521580 is 85125600547.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2826210 + ... + 3078550.

It is an arithmetic number, because the mean of its divisors is an integer number (33361883478).

Almost surely, 2^745006521580 is an apocalyptic number.

It is an amenable number.

745006521580 is an abundant number, since it is smaller than the sum of its proper divisors (856363885364).

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

745006521580 is a wasteful number, since it uses less digits than its factorization.

745006521580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255826 (or 255824 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 745006521580 in words is "seven hundred forty-five billion, six million, five hundred twenty-one thousand, five hundred eighty".