1257166137410 has 8 divisors (see below), whose sum is σ = 2262899047356. Its totient is φ = 502866454960.

The previous prime is 1257166137407. The next prime is 1257166137419. The reversal of 1257166137410 is 147316617521.

It can be written as a sum of positive squares in 2 ways, for example, as 1096173402289 + 160992735121 = 1046983^2 + 401239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1257166137419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62858306861 + ... + 62858306880.

Almost surely, 2^{1257166137410} is an apocalyptic number.

1257166137410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1257166137410 is a deficient number, since it is larger than the sum of its proper divisors (1005732909946).

1257166137410 is a wasteful number, since it uses less digits than its factorization.

1257166137410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125716613748.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 1257166137410 in words is "one trillion, two hundred fifty-seven billion, one hundred sixty-six million, one hundred thirty-seven thousand, four hundred ten".