111450355661 has 16 divisors (see below), whose sum is σ = 115796321280. Its totient is φ = 107188127280.

The previous prime is 111450355631. The next prime is 111450355699. The reversal of 111450355661 is 166553054111.

It is a happy number.

It is not a de Polignac number, because 111450355661 - 2¹⁴ = 111450339277 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 (111450355631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8831246 + ... + 8843856.

It is an arithmetic number, because the mean of its divisors is an integer number (7237270080).

Almost surely, 2^111450355661 is an apocalyptic number.

It is an amenable number.

111450355661 is a deficient number, since it is larger than the sum of its proper divisors (4345965619).

111450355661 is a wasteful number, since it uses less digits than its factorization.

111450355661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15904.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 111450355661 in words is "one hundred eleven billion, four hundred fifty million, three hundred fifty-five thousand, six hundred sixty-one".