2123509197194 has 32 divisors (see below), whose sum is σ = 3972673990656. Its totient is φ = 827042076720.

The previous prime is 2123509197181. The next prime is 2123509197269. The reversal of 2123509197194 is 4917919053212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2065574 + ... + 2917809.

It is an arithmetic number, because the mean of its divisors is an integer number (124146062208).

Almost surely, 2^{2123509197194} is an apocalyptic number.

2123509197194 is a deficient number, since it is larger than the sum of its proper divisors (1849164793462).

2123509197194 is a wasteful number, since it uses less digits than its factorization.

2123509197194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986170.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 2123509197194 in words is "two trillion, one hundred twenty-three billion, five hundred nine million, one hundred ninety-seven thousand, one hundred ninety-four".