210046504457 has 4 divisors (see below), whose sum is σ = 212211932436. Its totient is φ = 207881076480.

The previous prime is 210046504397. The next prime is 210046504469. The reversal of 210046504457 is 754405640012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149338965136 + 60707539321 = 386444^2 + 246389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210046504457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210046504457.

It is not an unprimeable number, because it can be changed into a prime (210046504487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082713844 + ... + 1082714037.

It is an arithmetic number, because the mean of its divisors is an integer number (53052983109).

Almost surely, 2^210046504457 is an apocalyptic number.

It is an amenable number.

210046504457 is a deficient number, since it is larger than the sum of its proper divisors (2165427979).

210046504457 is an equidigital number, since it uses as much as digits as its factorization.

210046504457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165427978.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 210046504457 in words is "two hundred ten billion, forty-six million, five hundred four thousand, four hundred fifty-seven".