249470513273 has 2 divisors, whose sum is σ = 249470513274. Its totient is φ = 249470513272.

The previous prime is 249470513261. The next prime is 249470513293. The reversal of 249470513273 is 372315074942.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163707633664 + 85762879609 = 404608^2 + 292853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249470513273 is a prime.

It is not a weakly prime, because it can be changed into another prime (249470513233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124735256636 + 124735256637.

It is an arithmetic number, because the mean of its divisors is an integer number (124735256637).

Almost surely, 2^249470513273 is an apocalyptic number.

It is an amenable number.

249470513273 is a deficient number, since it is larger than the sum of its proper divisors (1).

249470513273 is an equidigital number, since it uses as much as digits as its factorization.

249470513273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 249470513273 in words is "two hundred forty-nine billion, four hundred seventy million, five hundred thirteen thousand, two hundred seventy-three".