111661180762151 has 4 divisors (see below), whose sum is σ = 111687913153392. Its totient is φ = 111634448370912.

The previous prime is 111661180762147. The next prime is 111661180762213. The reversal of 111661180762151 is 151267081166111.

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 111661180762151 - 2² = 111661180762147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111661180762096 and 111661180762105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111661180762751) 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, 13366189355 + ... + 13366197708.

It is an arithmetic number, because the mean of its divisors is an integer number (27921978288348).

Almost surely, 2^{111661180762151} is an apocalyptic number.

111661180762151 is a deficient number, since it is larger than the sum of its proper divisors (26732391241).

111661180762151 is an equidigital number, since it uses as much as digits as its factorization.

111661180762151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26732391240.

The product of its (nonzero) digits is 120960, while the sum is 47.

The spelling of 111661180762151 in words is "one hundred eleven trillion, six hundred sixty-one billion, one hundred eighty million, seven hundred sixty-two thousand, one hundred fifty-one".