1257638876382 has 24 divisors (see below), whose sum is σ = 2925935345736. Its totient is φ = 359325393168.

The previous prime is 1257638876323. The next prime is 1257638876401. The reversal of 1257638876382 is 2836788367521.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2138841333 + ... + 2138841920.

It is an arithmetic number, because the mean of its divisors is an integer number (121913972739).

Almost surely, 2^{1257638876382} is an apocalyptic number.

1257638876382 is an abundant number, since it is smaller than the sum of its proper divisors (1668296469354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1257638876382 is a wasteful number, since it uses less digits than its factorization.

1257638876382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277683272 (or 4277683265 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 66.

The spelling of 1257638876382 in words is "one trillion, two hundred fifty-seven billion, six hundred thirty-eight million, eight hundred seventy-six thousand, three hundred eighty-two".