75815000660 has 48 divisors (see below), whose sum is σ = 184000481280. Its totient is φ = 25701646080.

The previous prime is 75815000641. The next prime is 75815000699. The reversal of 75815000660 is 6600051857.

It is a happy number.

It is a congruent number.

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, 3029876 + ... + 3054795.

It is an arithmetic number, because the mean of its divisors is an integer number (3833343360).

Almost surely, 2^75815000660 is an apocalyptic number.

75815000660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75815000660 is an abundant number, since it is smaller than the sum of its proper divisors (108185480620).

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

75815000660 is a wasteful number, since it uses less digits than its factorization.

75815000660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084776 (or 6084774 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 75815000660 in words is "seventy-five billion, eight hundred fifteen million, six hundred sixty", and thus it is an aban number.