1254028916639 has 2 divisors, whose sum is σ = 1254028916640. Its totient is φ = 1254028916638.

The previous prime is 1254028916627. The next prime is 1254028916641. The reversal of 1254028916639 is 9366198204521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1254028916639 is a prime.

It is a super-2 number, since 2×1254028916639² (a number of 25 digits) contains 22 as substring.

Together with 1254028916641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254028916039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627014458319 + 627014458320.

It is an arithmetic number, because the mean of its divisors is an integer number (627014458320).

Almost surely, 2^{1254028916639} is an apocalyptic number.

1254028916639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254028916639 is an equidigital number, since it uses as much as digits as its factorization.

1254028916639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 1254028916639 in words is "one trillion, two hundred fifty-four billion, twenty-eight million, nine hundred sixteen thousand, six hundred thirty-nine".