249711271946 has 4 divisors (see below), whose sum is σ = 374566907922. Its totient is φ = 124855635972.

The previous prime is 249711271919. The next prime is 249711272059. The reversal of 249711271946 is 649172117942.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 242807490025 + 6903781921 = 492755^2 + 83089^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62427817985 + ... + 62427817988.

Almost surely, 2^249711271946 is an apocalyptic number.

249711271946 is a deficient number, since it is larger than the sum of its proper divisors (124855635976).

249711271946 is a wasteful number, since it uses less digits than its factorization.

249711271946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124855635975.

The product of its digits is 1524096, while the sum is 53.

The spelling of 249711271946 in words is "two hundred forty-nine billion, seven hundred eleven million, two hundred seventy-one thousand, nine hundred forty-six".