2197795431660 has 24 divisors (see below), whose sum is σ = 6153827208816. Its totient is φ = 586078781760.

The previous prime is 2197795431653. The next prime is 2197795431661. The reversal of 2197795431660 is 661345977912.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 36629923861 = 2197795431660 / (2 + 1 + 9 + 7 + 7 + 9 + 5 + 4 + 3 + 1 + 6 + 6 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 2197795431594 and 2197795431603.

It is not an unprimeable number, because it can be changed into a prime (2197795431661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18314961871 + ... + 18314961990.

It is an arithmetic number, because the mean of its divisors is an integer number (256409467034).

Almost surely, 2^{2197795431660} is an apocalyptic number.

2197795431660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2197795431660 is an abundant number, since it is smaller than the sum of its proper divisors (3956031777156).

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

2197795431660 is a wasteful number, since it uses less digits than its factorization.

2197795431660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36629923873 (or 36629923871 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 60.

The spelling of 2197795431660 in words is "two trillion, one hundred ninety-seven billion, seven hundred ninety-five million, four hundred thirty-one thousand, six hundred sixty".