1103139256091 has 4 divisors (see below), whose sum is σ = 1118676428784. Its totient is φ = 1087602083400.

The previous prime is 1103139256081. The next prime is 1103139256103. The reversal of 1103139256091 is 1906529313011.

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 1103139256091 - 2³⁴ = 1085959386907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103139256081) 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, 7768586240 + ... + 7768586381.

It is an arithmetic number, because the mean of its divisors is an integer number (279669107196).

Almost surely, 2^{1103139256091} is an apocalyptic number.

1103139256091 is a deficient number, since it is larger than the sum of its proper divisors (15537172693).

1103139256091 is an equidigital number, since it uses as much as digits as its factorization.

1103139256091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15537172692.

The product of its (nonzero) digits is 43740, while the sum is 41.

The spelling of 1103139256091 in words is "one trillion, one hundred three billion, one hundred thirty-nine million, two hundred fifty-six thousand, ninety-one".