249533630797 has 16 divisors (see below), whose sum is σ = 279031677120. Its totient is φ = 221178006400.

The previous prime is 249533630777. The next prime is 249533630809. The reversal of 249533630797 is 797036335942.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249533630797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249533630737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555954 + ... + 898972.

It is an arithmetic number, because the mean of its divisors is an integer number (17439479820).

Almost surely, 2^249533630797 is an apocalyptic number.

It is an amenable number.

249533630797 is a deficient number, since it is larger than the sum of its proper divisors (29498046323).

249533630797 is a wasteful number, since it uses less digits than its factorization.

249533630797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344684.

The product of its (nonzero) digits is 25719120, while the sum is 58.

The spelling of 249533630797 in words is "two hundred forty-nine billion, five hundred thirty-three million, six hundred thirty thousand, seven hundred ninety-seven".