1251948192247 has 2 divisors, whose sum is σ = 1251948192248. Its totient is φ = 1251948192246.

The previous prime is 1251948192233. The next prime is 1251948192259. The reversal of 1251948192247 is 7422918491521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1251948192247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1251948198247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625974096123 + 625974096124.

It is an arithmetic number, because the mean of its divisors is an integer number (625974096124).

Almost surely, 2^{1251948192247} is an apocalyptic number.

1251948192247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251948192247 is an equidigital number, since it uses as much as digits as its factorization.

1251948192247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 55.

The spelling of 1251948192247 in words is "one trillion, two hundred fifty-one billion, nine hundred forty-eight million, one hundred ninety-two thousand, two hundred forty-seven".