2661356360580 has 96 divisors (see below), whose sum is σ = 7693009551360. Its totient is φ = 686727431040.

The previous prime is 2661356360569. The next prime is 2661356360609. The reversal of 2661356360580 is 850636531662.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18317461 + ... + 18462179.

It is an arithmetic number, because the mean of its divisors is an integer number (80135516160).

Almost surely, 2^{2661356360580} is an apocalyptic number.

2661356360580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2661356360580 is an abundant number, since it is smaller than the sum of its proper divisors (5031653190780).

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

2661356360580 is a wasteful number, since it uses less digits than its factorization.

2661356360580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154649 (or 154647 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 2661356360580 in words is "two trillion, six hundred sixty-one billion, three hundred fifty-six million, three hundred sixty thousand, five hundred eighty".