100166115550 has 48 divisors (see below), whose sum is σ = 189175807152. Its totient is φ = 39450470400.

The previous prime is 100166115503. The next prime is 100166115571. The reversal of 100166115550 is 55511661001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9217120 + ... + 9227980.

It is an arithmetic number, because the mean of its divisors is an integer number (3941162649).

Almost surely, 2^100166115550 is an apocalyptic number.

100166115550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100166115550 is a deficient number, since it is larger than the sum of its proper divisors (89009691602).

100166115550 is a wasteful number, since it uses less digits than its factorization.

100166115550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13693 (or 13688 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 31.

Adding to 100166115550 its reverse (55511661001), we get a palindrome (155677776551).

The spelling of 100166115550 in words is "one hundred billion, one hundred sixty-six million, one hundred fifteen thousand, five hundred fifty".