2660351556 has 48 divisors (see below), whose sum is σ = 6662706624. Its totient is φ = 823182336.

The previous prime is 2660351549. The next prime is 2660351579. The reversal of 2660351556 is 6551530662.

2660351556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2660351556² = 14154940803023242272, which contains 22 as substring.

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, 74430 + ... + 104213.

It is an arithmetic number, because the mean of its divisors is an integer number (138806388).

Almost surely, 2^2660351556 is an apocalyptic number.

It is an amenable number.

2660351556 is an abundant number, since it is smaller than the sum of its proper divisors (4002355068).

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

2660351556 is a wasteful number, since it uses less digits than its factorization.

2660351556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178740 (or 178738 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 2660351556 is about 51578.5959095437. The cubic root of 2660351556 is about 1385.6270201527.

The spelling of 2660351556 in words is "two billion, six hundred sixty million, three hundred fifty-one thousand, five hundred fifty-six".