249864882505642 has 8 divisors (see below), whose sum is σ = 386887560008832. Its totient is φ = 120902362502700.

The previous prime is 249864882505631. The next prime is 249864882505669. The reversal of 249864882505642 is 246505288468942.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2015039374984 + ... + 2015039375107.

It is an arithmetic number, because the mean of its divisors is an integer number (48360945001104).

Almost surely, 2^{249864882505642} is an apocalyptic number.

249864882505642 is a deficient number, since it is larger than the sum of its proper divisors (137022677503190).

249864882505642 is a wasteful number, since it uses less digits than its factorization.

249864882505642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030078750124.

The product of its (nonzero) digits is 2123366400, while the sum is 73.

The spelling of 249864882505642 in words is "two hundred forty-nine trillion, eight hundred sixty-four billion, eight hundred eighty-two million, five hundred five thousand, six hundred forty-two".