2191620279596 has 24 divisors (see below), whose sum is σ = 4185186912144. Its totient is φ = 995908998080.

The previous prime is 2191620279593. The next prime is 2191620279599. The reversal of 2191620279596 is 6959720261912.

It is an interprime number because it is at equal distance from previous prime (2191620279593) and next prime (2191620279599).

It is not an unprimeable number, because it can be changed into a prime (2191620279593) 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, 6893735 + ... + 7204638.

It is an arithmetic number, because the mean of its divisors is an integer number (174382788006).

Almost surely, 2^{2191620279596} is an apocalyptic number.

It is an amenable number.

2191620279596 is a deficient number, since it is larger than the sum of its proper divisors (1993566632548).

2191620279596 is a wasteful number, since it uses less digits than its factorization.

2191620279596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14101921 (or 14101919 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 2191620279596 in words is "two trillion, one hundred ninety-one billion, six hundred twenty million, two hundred seventy-nine thousand, five hundred ninety-six".