249966267904 has 80 divisors (see below), whose sum is σ = 540075843648. Its totient is φ = 115128205312.

The previous prime is 249966267877. The next prime is 249966267953. The reversal of 249966267904 is 409762669942.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 103572 + ... + 714604.

Almost surely, 2^249966267904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249966267904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270037921824).

249966267904 is an abundant number, since it is smaller than the sum of its proper divisors (290109575744).

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

249966267904 is an equidigital number, since it uses as much as digits as its factorization.

249966267904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611115 (or 611099 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 64.

The spelling of 249966267904 in words is "two hundred forty-nine billion, nine hundred sixty-six million, two hundred sixty-seven thousand, nine hundred four".