249014989644 has 12 divisors (see below), whose sum is σ = 581034975864. Its totient is φ = 83004996544.

The previous prime is 249014989637. The next prime is 249014989661. The reversal of 249014989644 is 446989410942.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10375624557 + ... + 10375624580.

It is an arithmetic number, because the mean of its divisors is an integer number (48419581322).

Almost surely, 2^249014989644 is an apocalyptic number.

It is an amenable number.

249014989644 is an abundant number, since it is smaller than the sum of its proper divisors (332019986220).

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

249014989644 is a wasteful number, since it uses less digits than its factorization.

249014989644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20751249144 (or 20751249142 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 60.

The spelling of 249014989644 in words is "two hundred forty-nine billion, fourteen million, nine hundred eighty-nine thousand, six hundred forty-four".