1081040629091 has 4 divisors (see below), whose sum is σ = 1082439130032. Its totient is φ = 1079642128152.

The previous prime is 1081040629087. The next prime is 1081040629099. The reversal of 1081040629091 is 1909260401801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1081040629091 - 2² = 1081040629087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081040629099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699249311 + ... + 699250856.

It is an arithmetic number, because the mean of its divisors is an integer number (270609782508).

Almost surely, 2^{1081040629091} is an apocalyptic number.

1081040629091 is a deficient number, since it is larger than the sum of its proper divisors (1398500941).

1081040629091 is an equidigital number, since it uses as much as digits as its factorization.

1081040629091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398500940.

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 1081040629091 in words is "one trillion, eighty-one billion, forty million, six hundred twenty-nine thousand, ninety-one".