111261243047 has 4 divisors (see below), whose sum is σ = 111454070736. Its totient is φ = 111068415360.

The previous prime is 111261242971. The next prime is 111261243097. The reversal of 111261243047 is 740342162111.

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 111261243047 - 2²⁸ = 110992807591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111261243097) 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, 96412979 + ... + 96414132.

It is an arithmetic number, because the mean of its divisors is an integer number (27863517684).

Almost surely, 2^111261243047 is an apocalyptic number.

111261243047 is a deficient number, since it is larger than the sum of its proper divisors (192827689).

111261243047 is an equidigital number, since it uses as much as digits as its factorization.

111261243047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192827688.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 111261243047 in words is "one hundred eleven billion, two hundred sixty-one million, two hundred forty-three thousand, forty-seven".