1257428901716 has 48 divisors (see below), whose sum is σ = 2482724912640. Its totient is φ = 553248178560.

The previous prime is 1257428901713. The next prime is 1257428901719. The reversal of 1257428901716 is 6171098247521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1257428901713) and next prime (1257428901719).

It is a super-2 number, since 2×1257428901716² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257428901713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5713211 + ... + 5929218.

It is an arithmetic number, because the mean of its divisors is an integer number (51723435680).

Almost surely, 2^{1257428901716} is an apocalyptic number.

It is an amenable number.

1257428901716 is a deficient number, since it is larger than the sum of its proper divisors (1225296010924).

1257428901716 is a wasteful number, since it uses less digits than its factorization.

1257428901716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11642544 (or 11642542 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 1257428901716 in words is "one trillion, two hundred fifty-seven billion, four hundred twenty-eight million, nine hundred one thousand, seven hundred sixteen".