2661369657610 has 64 divisors (see below), whose sum is σ = 5135161256064. Its totient is φ = 989510400000.

The previous prime is 2661369657607. The next prime is 2661369657613. The reversal of 2661369657610 is 167569631662.

It is an interprime number because it is at equal distance from previous prime (2661369657607) and next prime (2661369657613).

It is not an unprimeable number, because it can be changed into a prime (2661369657613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42312685 + ... + 42375535.

It is an arithmetic number, because the mean of its divisors is an integer number (80236894626).

Almost surely, 2^{2661369657610} is an apocalyptic number.

2661369657610 is a deficient number, since it is larger than the sum of its proper divisors (2473791598454).

2661369657610 is a wasteful number, since it uses less digits than its factorization.

2661369657610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65959.

The product of its (nonzero) digits is 14696640, while the sum is 58.

The spelling of 2661369657610 in words is "two trillion, six hundred sixty-one billion, three hundred sixty-nine million, six hundred fifty-seven thousand, six hundred ten".