102171123566 has 16 divisors (see below), whose sum is σ = 157416060960. Its totient is φ = 49699406880.

The previous prime is 102171123497. The next prime is 102171123577. The reversal of 102171123566 is 665321171201.

It is a happy number.

It is a Curzon number.

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, 648176 + ... + 790236.

It is an arithmetic number, because the mean of its divisors is an integer number (9838503810).

Almost surely, 2^102171123566 is an apocalyptic number.

102171123566 is a deficient number, since it is larger than the sum of its proper divisors (55244937394).

102171123566 is a wasteful number, since it uses less digits than its factorization.

102171123566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151819.

The product of its (nonzero) digits is 15120, while the sum is 35.

Adding to 102171123566 its reverse (665321171201), we get a palindrome (767492294767).

The spelling of 102171123566 in words is "one hundred two billion, one hundred seventy-one million, one hundred twenty-three thousand, five hundred sixty-six".