1257145108611 has 16 divisors (see below), whose sum is σ = 1915677844224. Its totient is φ = 718358075424.

The previous prime is 1257145108591. The next prime is 1257145108619. The reversal of 1257145108611 is 1168015417521.

It is not a de Polignac number, because 1257145108611 - 2¹⁴ = 1257145092227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1257145108619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1157896 + ... + 1963418.

It is an arithmetic number, because the mean of its divisors is an integer number (119729865264).

Almost surely, 2^{1257145108611} is an apocalyptic number.

1257145108611 is a deficient number, since it is larger than the sum of its proper divisors (658532735613).

1257145108611 is an equidigital number, since it uses as much as digits as its factorization.

1257145108611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879850.

The product of its (nonzero) digits is 67200, while the sum is 42.

It can be divided in two parts, 125714 and 5108611, that added together give a palindrome (5234325).

The spelling of 1257145108611 in words is "one trillion, two hundred fifty-seven billion, one hundred forty-five million, one hundred eight thousand, six hundred eleven".