210561071172 has 24 divisors (see below), whose sum is σ = 491317453536. Its totient is φ = 70185839808.

The previous prime is 210561071159. The next prime is 210561071183. The reversal of 210561071172 is 271170165012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877048 + ... + 1091024.

It is an arithmetic number, because the mean of its divisors is an integer number (20471560564).

Almost surely, 2^210561071172 is an apocalyptic number.

It is an amenable number.

210561071172 is an abundant number, since it is smaller than the sum of its proper divisors (280756382364).

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

210561071172 is a wasteful number, since it uses less digits than its factorization.

210561071172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295987 (or 295985 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 33.

The spelling of 210561071172 in words is "two hundred ten billion, five hundred sixty-one million, seventy-one thousand, one hundred seventy-two".