209147255232 has 28 divisors (see below), whose sum is σ = 553368779976. Its totient is φ = 69715751680.

The previous prime is 209147255173. The next prime is 209147255279. The reversal of 209147255232 is 232552741902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544654119 + ... + 544654502.

Almost surely, 2^209147255232 is an apocalyptic number.

It is an amenable number.

209147255232 is an abundant number, since it is smaller than the sum of its proper divisors (344221524744).

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

209147255232 is a wasteful number, since it uses less digits than its factorization.

209147255232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089308636 (or 1089308626 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 209147255232 in words is "two hundred nine billion, one hundred forty-seven million, two hundred fifty-five thousand, two hundred thirty-two".