105531011604 has 18 divisors (see below), whose sum is σ = 266758946090. Its totient is φ = 35177003856.

The previous prime is 105531011587. The next prime is 105531011623. The reversal of 105531011604 is 406110135501.

105531011604 is a `hidden beast` number, since 1 + 0 + 5 + 53 + 1 + 0 + 1 + 1 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 92592404100 + 12938607504 = 304290^2 + 113748^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×105531011604² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1465708459 + ... + 1465708530.

Almost surely, 2^105531011604 is an apocalyptic number.

It is an amenable number.

105531011604 is an abundant number, since it is smaller than the sum of its proper divisors (161227934486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105531011604 is a wasteful number, since it uses less digits than its factorization.

105531011604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931416999 (or 2931416994 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 105531011604 in words is "one hundred five billion, five hundred thirty-one million, eleven thousand, six hundred four".