1257170530537 has 2 divisors, whose sum is σ = 1257170530538. Its totient is φ = 1257170530536.

The previous prime is 1257170530523. The next prime is 1257170530549. The reversal of 1257170530537 is 7350350717521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1249423186176 + 7747344361 = 1117776^2 + 88019^2 .

It is a cyclic number.

It is not a de Polignac number, because 1257170530537 - 2¹⁵ = 1257170497769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1257170537537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628585265268 + 628585265269.

It is an arithmetic number, because the mean of its divisors is an integer number (628585265269).

Almost surely, 2^{1257170530537} is an apocalyptic number.

It is an amenable number.

1257170530537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257170530537 is an equidigital number, since it uses as much as digits as its factorization.

1257170530537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 771750, while the sum is 46.

The spelling of 1257170530537 in words is "one trillion, two hundred fifty-seven billion, one hundred seventy million, five hundred thirty thousand, five hundred thirty-seven".