2161311232760 has 32 divisors (see below), whose sum is σ = 4864166067600. Its totient is φ = 864308352000.

The previous prime is 2161311232753. The next prime is 2161311232771. The reversal of 2161311232760 is 672321131612.

It is a self number, because there is not a number n which added to its sum of digits gives 2161311232760.

It is a congruent number.

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, 6592370 + ... + 6912449.

Almost surely, 2^{2161311232760} is an apocalyptic number.

2161311232760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2161311232760 is an abundant number, since it is smaller than the sum of its proper divisors (2702854834840).

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

2161311232760 is a wasteful number, since it uses less digits than its factorization.

2161311232760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13508831 (or 13508827 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 2161311232760 in words is "two trillion, one hundred sixty-one billion, three hundred eleven million, two hundred thirty-two thousand, seven hundred sixty".