249816666990201 has 8 divisors (see below), whose sum is σ = 338060365280544. Its totient is φ = 164058706680000.

The previous prime is 249816666990179. The next prime is 249816666990323. The reversal of 249816666990201 is 102099666618942.

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

It is not a de Polignac number, because 249816666990201 - 2²¹ = 249816664893049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249816666990601) 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, 621434494800 + ... + 621434495201.

It is an arithmetic number, because the mean of its divisors is an integer number (42257545660068).

Almost surely, 2^{249816666990201} is an apocalyptic number.

It is an amenable number.

249816666990201 is a deficient number, since it is larger than the sum of its proper divisors (88243698290343).

249816666990201 is a wasteful number, since it uses less digits than its factorization.

249816666990201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242868990071.

The product of its (nonzero) digits is 120932352, while the sum is 69.

The spelling of 249816666990201 in words is "two hundred forty-nine trillion, eight hundred sixteen billion, six hundred sixty-six million, nine hundred ninety thousand, two hundred one".