2661255652 has 24 divisors (see below), whose sum is σ = 5166695520. Its totient is φ = 1189157760.

The previous prime is 2661255631. The next prime is 2661255719. The reversal of 2661255652 is 2565521662.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509973 + ... + 515164.

It is an arithmetic number, because the mean of its divisors is an integer number (215278980).

Almost surely, 2^2661255652 is an apocalyptic number.

2661255652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2661255652 is a deficient number, since it is larger than the sum of its proper divisors (2505439868).

2661255652 is a wasteful number, since it uses less digits than its factorization.

2661255652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025211 (or 1025209 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

The square root of 2661255652 is about 51587.3594206953. The cubic root of 2661255652 is about 1385.7839665733.

The spelling of 2661255652 in words is "two billion, six hundred sixty-one million, two hundred fifty-five thousand, six hundred fifty-two".