249954305678 has 32 divisors (see below), whose sum is σ = 471583745280. Its totient is φ = 96522975360.

The previous prime is 249954305677. The next prime is 249954305779. The reversal of 249954305678 is 876503459942.

It is a self number, because there is not a number n which added to its sum of digits gives 249954305678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249954305677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7164368 + ... + 7199171.

It is an arithmetic number, because the mean of its divisors is an integer number (14736992040).

Almost surely, 2^249954305678 is an apocalyptic number.

249954305678 is a deficient number, since it is larger than the sum of its proper divisors (221629439602).

249954305678 is a wasteful number, since it uses less digits than its factorization.

249954305678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14363672.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 249954305678 in words is "two hundred forty-nine billion, nine hundred fifty-four million, three hundred five thousand, six hundred seventy-eight".