249221346672 has 40 divisors (see below), whose sum is σ = 681693685776. Its totient is φ = 78187088896.

The previous prime is 249221346623. The next prime is 249221346679. The reversal of 249221346672 is 276643122942.

It is a super-2 number, since 2×249221346672² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249221346679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152708343 + ... + 152709974.

Almost surely, 2^249221346672 is an apocalyptic number.

It is an amenable number.

249221346672 is an abundant number, since it is smaller than the sum of its proper divisors (432472339104).

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

249221346672 is a wasteful number, since it uses less digits than its factorization.

249221346672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305418345 (or 305418339 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 48.

The spelling of 249221346672 in words is "two hundred forty-nine billion, two hundred twenty-one million, three hundred forty-six thousand, six hundred seventy-two".