210172140457 has 8 divisors (see below), whose sum is σ = 221242876160. Its totient is φ = 199102309200.

The previous prime is 210172140449. The next prime is 210172140461. The reversal of 210172140457 is 754041271012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210172140457 - 2³ = 210172140449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210172140407) 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, 279943 + ... + 706195.

It is an arithmetic number, because the mean of its divisors is an integer number (27655359520).

Almost surely, 2^210172140457 is an apocalyptic number.

It is an amenable number.

210172140457 is a deficient number, since it is larger than the sum of its proper divisors (11070735703).

210172140457 is a wasteful number, since it uses less digits than its factorization.

210172140457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452223.

The product of its (nonzero) digits is 15680, while the sum is 34.

The spelling of 210172140457 in words is "two hundred ten billion, one hundred seventy-two million, one hundred forty thousand, four hundred fifty-seven".