111137557207 has 4 divisors (see below), whose sum is σ = 113848229376. Its totient is φ = 108426885040.

The previous prime is 111137557121. The next prime is 111137557247. The reversal of 111137557207 is 702755731111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702755731111 = 7 ⋅100393675873.

It is a cyclic number.

It is not a de Polignac number, because 111137557207 - 2²³ = 111129168599 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111137557207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111137557247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1355336023 + ... + 1355336104.

It is an arithmetic number, because the mean of its divisors is an integer number (28462057344).

Almost surely, 2^111137557207 is an apocalyptic number.

111137557207 is a deficient number, since it is larger than the sum of its proper divisors (2710672169).

111137557207 is an equidigital number, since it uses as much as digits as its factorization.

111137557207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710672168.

The product of its (nonzero) digits is 51450, while the sum is 40.

The spelling of 111137557207 in words is "one hundred eleven billion, one hundred thirty-seven million, five hundred fifty-seven thousand, two hundred seven".