105666155520 has 88 divisors (see below), whose sum is σ = 337966643424. Its totient is φ = 28177637376.

The previous prime is 105666155489. The next prime is 105666155603. The reversal of 105666155520 is 25551666501.

It is a super-2 number, since 2×105666155520² (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 7 ways as a sum of consecutive naturals, for example, 3424294 + ... + 3455013.

Almost surely, 2^105666155520 is an apocalyptic number.

105666155520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105666155520 is an abundant number, since it is smaller than the sum of its proper divisors (232300487904).

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

105666155520 is an equidigital number, since it uses as much as digits as its factorization.

105666155520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6879335 (or 6879317 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 105666155520 in words is "one hundred five billion, six hundred sixty-six million, one hundred fifty-five thousand, five hundred twenty".