248705943049 has 2 divisors, whose sum is σ = 248705943050. Its totient is φ = 248705943048.

The previous prime is 248705942999. The next prime is 248705943061. The reversal of 248705943049 is 940349507842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149175157824 + 99530785225 = 386232^2 + 315485^2 .

It is a cyclic number.

It is not a de Polignac number, because 248705943049 - 2²⁵ = 248672388617 is a prime.

It is a super-2 number, since 2×248705943049² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (248705943089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124352971524 + 124352971525.

It is an arithmetic number, because the mean of its divisors is an integer number (124352971525).

Almost surely, 2^248705943049 is an apocalyptic number.

It is an amenable number.

248705943049 is a deficient number, since it is larger than the sum of its proper divisors (1).

248705943049 is an equidigital number, since it uses as much as digits as its factorization.

248705943049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 248705943049 in words is "two hundred forty-eight billion, seven hundred five million, nine hundred forty-three thousand, forty-nine".