249204287798 has 4 divisors (see below), whose sum is σ = 373806431700. Its totient is φ = 124602143898.

The previous prime is 249204287711. The next prime is 249204287807. The reversal of 249204287798 is 897782402942.

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

It is a self number, because there is not a number n which added to its sum of digits gives 249204287798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62301071948 + ... + 62301071951.

It is an arithmetic number, because the mean of its divisors is an integer number (93451607925).

Almost surely, 2^249204287798 is an apocalyptic number.

249204287798 is a deficient number, since it is larger than the sum of its proper divisors (124602143902).

249204287798 is a wasteful number, since it uses less digits than its factorization.

249204287798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124602143901.

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 249204287798 in words is "two hundred forty-nine billion, two hundred four million, two hundred eighty-seven thousand, seven hundred ninety-eight".