1257170217076 has 6 divisors (see below), whose sum is σ = 2200047879890. Its totient is φ = 628585108536.

The previous prime is 1257170217047. The next prime is 1257170217109. The reversal of 1257170217076 is 6707120717521.

It can be written as a sum of positive squares in only one way, i.e., 1242502584976 + 14667632100 = 1114676^2 + 121110^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 157146277131 + ... + 157146277138.

Almost surely, 2^{1257170217076} is an apocalyptic number.

It is an amenable number.

1257170217076 is a deficient number, since it is larger than the sum of its proper divisors (942877662814).

1257170217076 is a wasteful number, since it uses less digits than its factorization.

1257170217076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314292554273 (or 314292554271 counting only the distinct ones).

The product of its (nonzero) digits is 288120, while the sum is 46.

The spelling of 1257170217076 in words is "one trillion, two hundred fifty-seven billion, one hundred seventy million, two hundred seventeen thousand, seventy-six".