100521116605 has 32 divisors (see below), whose sum is σ = 148890034944. Its totient is φ = 63443091456.

The previous prime is 100521116557. The next prime is 100521116623. The reversal of 100521116605 is 506611125001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 100521116605 - 2¹⁹ = 100520592317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160452 + ... + 476221.

It is an arithmetic number, because the mean of its divisors is an integer number (4652813592).

Almost surely, 2^100521116605 is an apocalyptic number.

It is an amenable number.

100521116605 is a deficient number, since it is larger than the sum of its proper divisors (48368918339).

100521116605 is a wasteful number, since it uses less digits than its factorization.

100521116605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637045.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 100521116605 in words is "one hundred billion, five hundred twenty-one million, one hundred sixteen thousand, six hundred five".