1245402112191 has 16 divisors (see below), whose sum is σ = 1747964077440. Its totient is φ = 786555675360.

The previous prime is 1245402112189. The next prime is 1245402112223. The reversal of 1245402112191 is 1912112045421.

It is not a de Polignac number, because 1245402112191 - 2¹ = 1245402112189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245402110191) 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, 3687021 + ... + 4010601.

It is an arithmetic number, because the mean of its divisors is an integer number (109247754840).

Almost surely, 2^{1245402112191} is an apocalyptic number.

1245402112191 is a deficient number, since it is larger than the sum of its proper divisors (502561965249).

1245402112191 is a wasteful number, since it uses less digits than its factorization.

1245402112191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391126.

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 1245402112191 in words is "one trillion, two hundred forty-five billion, four hundred two million, one hundred twelve thousand, one hundred ninety-one".