249464756826 has 64 divisors (see below), whose sum is σ = 573906643200. Its totient is φ = 80228086848.

The previous prime is 249464756771. The next prime is 249464756843. The reversal of 249464756826 is 628657464942.

It is a happy number.

249464756826 is a `hidden beast` number, since 2 + 4 + 9 + 4 + 6 + 47 + 568 + 26 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2082456 + ... + 2198988.

It is an arithmetic number, because the mean of its divisors is an integer number (8967291300).

Almost surely, 2^249464756826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249464756826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286953321600).

249464756826 is an abundant number, since it is smaller than the sum of its proper divisors (324441886374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249464756826 is a wasteful number, since it uses less digits than its factorization.

249464756826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117940 (or 117934 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 63.

The spelling of 249464756826 in words is "two hundred forty-nine billion, four hundred sixty-four million, seven hundred fifty-six thousand, eight hundred twenty-six".