1081574854691 has 2 divisors, whose sum is σ = 1081574854692. Its totient is φ = 1081574854690.

The previous prime is 1081574854687. The next prime is 1081574854727. The reversal of 1081574854691 is 1964584751801.

It is a happy number.

1081574854691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1081574854691 - 2² = 1081574854687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1081574854691.

It is not a weakly prime, because it can be changed into another prime (1081574854621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540787427345 + 540787427346.

It is an arithmetic number, because the mean of its divisors is an integer number (540787427346).

Almost surely, 2^{1081574854691} is an apocalyptic number.

1081574854691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081574854691 is an equidigital number, since it uses as much as digits as its factorization.

1081574854691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 59.

The spelling of 1081574854691 in words is "one trillion, eighty-one billion, five hundred seventy-four million, eight hundred fifty-four thousand, six hundred ninety-one".