249797272954860 has 240 divisors, whose sum is σ = 788983519602432. Its totient is φ = 66157146576000.

The previous prime is 249797272954837. The next prime is 249797272954927. The reversal of 249797272954860 is 68459272797942.

249797272954860 is a `hidden beast` number, since 2 + 4 + 9 + 7 + 9 + 7 + 2 + 7 + 2 + 9 + 548 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 249797272954860.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1155232155 + ... + 1155448365.

Almost surely, 2^{249797272954860} is an apocalyptic number.

249797272954860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249797272954860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394491759801216).

249797272954860 is an abundant number, since it is smaller than the sum of its proper divisors (539186246647572).

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

249797272954860 is a wasteful number, since it uses less digits than its factorization.

249797272954860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221106 (or 221095 counting only the distinct ones).

The product of its (nonzero) digits is 7681443840, while the sum is 81.

The spelling of 249797272954860 in words is "two hundred forty-nine trillion, seven hundred ninety-seven billion, two hundred seventy-two million, nine hundred fifty-four thousand, eight hundred sixty".