1257013680046 has 16 divisors (see below), whose sum is σ = 1926362934720. Its totient is φ = 615038307840.

The previous prime is 1257013680023. The next prime is 1257013680047. The reversal of 1257013680046 is 6400863107521.

It is a junction number, because it is equal to n+sod(n) for n = 1257013679984 and 1257013680011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257013680047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36384150 + ... + 36418681.

It is an arithmetic number, because the mean of its divisors is an integer number (120397683420).

Almost surely, 2^{1257013680046} is an apocalyptic number.

1257013680046 is a deficient number, since it is larger than the sum of its proper divisors (669349254674).

1257013680046 is an equidigital number, since it uses as much as digits as its factorization.

1257013680046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72803019.

The product of its (nonzero) digits is 241920, while the sum is 43.

Adding to 1257013680046 its reverse (6400863107521), we get a palindrome (7657876787567).

The spelling of 1257013680046 in words is "one trillion, two hundred fifty-seven billion, thirteen million, six hundred eighty thousand, forty-six".