75087381660 has 48 divisors (see below), whose sum is σ = 211003721376. Its totient is φ = 19951011072.

The previous prime is 75087381623. The next prime is 75087381661. The reversal of 75087381660 is 6618378057.

It is a super-2 number, since 2×75087381660² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75087381661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2242327 + ... + 2275566.

It is an arithmetic number, because the mean of its divisors is an integer number (4395910862).

Almost surely, 2^75087381660 is an apocalyptic number.

It is an amenable number.

75087381660 is an abundant number, since it is smaller than the sum of its proper divisors (135916339716).

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

75087381660 is a wasteful number, since it uses less digits than its factorization.

75087381660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518182 (or 4518180 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 75087381660 in words is "seventy-five billion, eighty-seven million, three hundred eighty-one thousand, six hundred sixty".