105523780554 has 48 divisors (see below), whose sum is σ = 229270616640. Its totient is φ = 35076928320.

The previous prime is 105523780543. The next prime is 105523780559. The reversal of 105523780554 is 455087325501.

105523780554 is a `hidden beast` number, since 1 + 0 + 5 + 5 + 23 + 78 + 0 + 554 = 666.

It is a super-2 number, since 2×105523780554² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105523780559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10057099 + ... + 10067585.

It is an arithmetic number, because the mean of its divisors is an integer number (4776471180).

Almost surely, 2^105523780554 is an apocalyptic number.

105523780554 is an abundant number, since it is smaller than the sum of its proper divisors (123746836086).

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

105523780554 is a wasteful number, since it uses less digits than its factorization.

105523780554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11995 (or 11992 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The spelling of 105523780554 in words is "one hundred five billion, five hundred twenty-three million, seven hundred eighty thousand, five hundred fifty-four".