1257267658157 has 8 divisors (see below), whose sum is σ = 1455065644800. Its totient is φ = 1064016751824.

The previous prime is 1257267658111. The next prime is 1257267658159. The reversal of 1257267658157 is 7518567627521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1257267658157 - 2²⁰ = 1257266609581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1257267658157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257267658159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1136769482 + ... + 1136770587.

It is an arithmetic number, because the mean of its divisors is an integer number (181883205600).

Almost surely, 2^{1257267658157} is an apocalyptic number.

It is an amenable number.

1257267658157 is a deficient number, since it is larger than the sum of its proper divisors (197797986643).

1257267658157 is an equidigital number, since it uses as much as digits as its factorization.

1257267658157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273540155.

The product of its digits is 49392000, while the sum is 62.

The spelling of 1257267658157 in words is "one trillion, two hundred fifty-seven billion, two hundred sixty-seven million, six hundred fifty-eight thousand, one hundred fifty-seven".