249718066876 has 12 divisors (see below), whose sum is σ = 437073371280. Its totient is φ = 124839960800.

The previous prime is 249718066753. The next prime is 249718066879. The reversal of 249718066876 is 678660817942.

It is a super-2 number, since 2×249718066876² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249718066879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4738681 + ... + 4791088.

It is an arithmetic number, because the mean of its divisors is an integer number (36422780940).

Almost surely, 2^249718066876 is an apocalyptic number.

It is an amenable number.

249718066876 is a deficient number, since it is larger than the sum of its proper divisors (187355304404).

249718066876 is a wasteful number, since it uses less digits than its factorization.

249718066876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9536324 (or 9536322 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 64.

The spelling of 249718066876 in words is "two hundred forty-nine billion, seven hundred eighteen million, sixty-six thousand, eight hundred seventy-six".