249078835117 has 12 divisors (see below), whose sum is σ = 289853397696. Its totient is φ = 213416101080.

The previous prime is 249078835073. The next prime is 249078835129. The reversal of 249078835117 is 711538870942.

It is not a de Polignac number, because 249078835117 - 2¹⁹ = 249078310829 is a prime.

It is a super-2 number, since 2×249078835117² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249078835717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 820683 + ... + 1082440.

It is an arithmetic number, because the mean of its divisors is an integer number (24154449808).

Almost surely, 2^249078835117 is an apocalyptic number.

It is an amenable number.

249078835117 is a deficient number, since it is larger than the sum of its proper divisors (40774562579).

249078835117 is a wasteful number, since it uses less digits than its factorization.

249078835117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905808 (or 1905801 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 249078835117 in words is "two hundred forty-nine billion, seventy-eight million, eight hundred thirty-five thousand, one hundred seventeen".