1251286086091 has 8 divisors (see below), whose sum is σ = 1268783208000. Its totient is φ = 1233846616392.

The previous prime is 1251286086041. The next prime is 1251286086139. The reversal of 1251286086091 is 1906806821521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1251286086091 - 2⁷ = 1251286085963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1251286086041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14369341 + ... + 14456158.

It is an arithmetic number, because the mean of its divisors is an integer number (158597901000).

Almost surely, 2^{1251286086091} is an apocalyptic number.

1251286086091 is a deficient number, since it is larger than the sum of its proper divisors (17497121909).

1251286086091 is an equidigital number, since it uses as much as digits as its factorization.

1251286086091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28826105.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 1251286086091 in words is "one trillion, two hundred fifty-one billion, two hundred eighty-six million, eighty-six thousand, ninety-one".