1257161114605 has 16 divisors (see below), whose sum is σ = 1645842369024. Its totient is φ = 914241113280.

The previous prime is 1257161114603. The next prime is 1257161114611. The reversal of 1257161114605 is 5064111617521.

It is not a de Polignac number, because 1257161114605 - 2¹ = 1257161114603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257161114603) 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, 163012 + ... + 1594018.

It is an arithmetic number, because the mean of its divisors is an integer number (102865148064).

Almost surely, 2^{1257161114605} is an apocalyptic number.

It is an amenable number.

1257161114605 is a deficient number, since it is larger than the sum of its proper divisors (388681254419).

1257161114605 is a wasteful number, since it uses less digits than its factorization.

1257161114605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446996.

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 1257161114605 in words is "one trillion, two hundred fifty-seven billion, one hundred sixty-one million, one hundred fourteen thousand, six hundred five".