249139148528 has 10 divisors (see below), whose sum is σ = 482707100304. Its totient is φ = 124569574256.

The previous prime is 249139148507. The next prime is 249139148569. The reversal of 249139148528 is 825841931942.

249139148528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7785598376 + ... + 7785598407.

Almost surely, 2^249139148528 is an apocalyptic number.

It is an amenable number.

249139148528 is a deficient number, since it is larger than the sum of its proper divisors (233567951776).

249139148528 is a wasteful number, since it uses less digits than its factorization.

249139148528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15571196791 (or 15571196785 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 56.

The spelling of 249139148528 in words is "two hundred forty-nine billion, one hundred thirty-nine million, one hundred forty-eight thousand, five hundred twenty-eight".