108521164563764 has 6 divisors (see below), whose sum is σ = 189912037986594. Its totient is φ = 54260582281880.

The previous prime is 108521164563727. The next prime is 108521164563797. The reversal of 108521164563764 is 467365461125801.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 102553941579664 + 5967222984100 = 10126892^2 + 2442790^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13565145570467 + ... + 13565145570474.

It is an arithmetic number, because the mean of its divisors is an integer number (31652006331099).

Almost surely, 2^{108521164563764} is an apocalyptic number.

It is an amenable number.

108521164563764 is a deficient number, since it is larger than the sum of its proper divisors (81390873422830).

108521164563764 is a wasteful number, since it uses less digits than its factorization.

108521164563764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27130291140945 (or 27130291140943 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 108521164563764 in words is "one hundred eight trillion, five hundred twenty-one billion, one hundred sixty-four million, five hundred sixty-three thousand, seven hundred sixty-four".