209195719392 has 96 divisors (see below), whose sum is σ = 599145652224. Its totient is φ = 63383628800.

The previous prime is 209195719351. The next prime is 209195719417. The reversal of 209195719392 is 293917591902.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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, 14330017 + ... + 14344607.

It is an arithmetic number, because the mean of its divisors is an integer number (6241100544).

Almost surely, 2^209195719392 is an apocalyptic number.

209195719392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

209195719392 is an abundant number, since it is smaller than the sum of its proper divisors (389949932832).

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

209195719392 is a wasteful number, since it uses less digits than its factorization.

209195719392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28192 (or 28184 counting only the distinct ones).

The product of its (nonzero) digits is 2755620, while the sum is 57.

The spelling of 209195719392 in words is "two hundred nine billion, one hundred ninety-five million, seven hundred nineteen thousand, three hundred ninety-two".