251200452191 has 8 divisors (see below), whose sum is σ = 272498190384. Its totient is φ = 230184803520.

The previous prime is 251200452157. The next prime is 251200452277. The reversal of 251200452191 is 191254002152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251200452191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251200452131) 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, 70520525 + ... + 70524086.

It is an arithmetic number, because the mean of its divisors is an integer number (34062273798).

Almost surely, 2^251200452191 is an apocalyptic number.

251200452191 is a deficient number, since it is larger than the sum of its proper divisors (21297738193).

251200452191 is a wasteful number, since it uses less digits than its factorization.

251200452191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141044761.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 251200452191 in words is "two hundred fifty-one billion, two hundred million, four hundred fifty-two thousand, one hundred ninety-one".