1257797931119 has 2 divisors, whose sum is σ = 1257797931120. Its totient is φ = 1257797931118.

The previous prime is 1257797931107. The next prime is 1257797931127. The reversal of 1257797931119 is 9111397977521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1257797931119 is a prime.

It is a super-2 number, since 2×1257797931119² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1257797931139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628898965559 + 628898965560.

It is an arithmetic number, because the mean of its divisors is an integer number (628898965560).

Almost surely, 2^{1257797931119} is an apocalyptic number.

1257797931119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257797931119 is an equidigital number, since it uses as much as digits as its factorization.

1257797931119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7501410, while the sum is 62.

The spelling of 1257797931119 in words is "one trillion, two hundred fifty-seven billion, seven hundred ninety-seven million, nine hundred thirty-one thousand, one hundred nineteen".