249464626656 has 48 divisors (see below), whose sum is σ = 748393881984. Its totient is φ = 71275607424.

The previous prime is 249464626639. The next prime is 249464626681. The reversal of 249464626656 is 656626464942.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 249464626656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185612890 + ... + 185614233.

It is an arithmetic number, because the mean of its divisors is an integer number (15591539208).

Almost surely, 2^249464626656 is an apocalyptic number.

It is an amenable number.

249464626656 is an abundant number, since it is smaller than the sum of its proper divisors (498929255328).

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

249464626656 is a wasteful number, since it uses less digits than its factorization.

249464626656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371227143 (or 371227135 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 60.

The spelling of 249464626656 in words is "two hundred forty-nine billion, four hundred sixty-four million, six hundred twenty-six thousand, six hundred fifty-six".