111623664405 has 32 divisors (see below), whose sum is σ = 194865533568. Its totient is φ = 54111814400.

The previous prime is 111623664379. The next prime is 111623664409. The reversal of 111623664405 is 504466326111.

It is not a de Polignac number, because 111623664405 - 2¹¹ = 111623662357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111623664409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1034467 + ... + 1137263.

It is an arithmetic number, because the mean of its divisors is an integer number (6089547924).

Almost surely, 2^111623664405 is an apocalyptic number.

111623664405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111623664405 is a deficient number, since it is larger than the sum of its proper divisors (83241869163).

111623664405 is a wasteful number, since it uses less digits than its factorization.

111623664405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109397.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 111623664405 in words is "one hundred eleven billion, six hundred twenty-three million, six hundred sixty-four thousand, four hundred five".