2660161251660 has 96 divisors (see below), whose sum is σ = 8145451238400. Its totient is φ = 643310768640.

The previous prime is 2660161251653. The next prime is 2660161251673. The reversal of 2660161251660 is 661521610662.

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, 4657380 + ... + 5197259.

It is an arithmetic number, because the mean of its divisors is an integer number (84848450400).

Almost surely, 2^{2660161251660} is an apocalyptic number.

2660161251660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660161251660 is an abundant number, since it is smaller than the sum of its proper divisors (5485289986740).

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

2660161251660 is a wasteful number, since it uses less digits than its factorization.

2660161251660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9855071 (or 9855069 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 2660161251660 in words is "two trillion, six hundred sixty billion, one hundred sixty-one million, two hundred fifty-one thousand, six hundred sixty".