100521970705 has 16 divisors (see below), whose sum is σ = 131364933840. Its totient is φ = 73397541888.

The previous prime is 100521970691. The next prime is 100521970739. The reversal of 100521970705 is 507079125001.

It is a Cunningham number, because it is equal to 317052²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 25909409296 + 74612561409 = 160964^2 + 273153^2 .

It is a cyclic number.

It is not a de Polignac number, because 100521970705 - 2¹⁵ = 100521937937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8682372 + ... + 8693941.

It is an arithmetic number, because the mean of its divisors is an integer number (8210308365).

Almost surely, 2^100521970705 is an apocalyptic number.

It is an amenable number.

100521970705 is a deficient number, since it is larger than the sum of its proper divisors (30842963135).

100521970705 is a wasteful number, since it uses less digits than its factorization.

100521970705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17376420.

The product of its (nonzero) digits is 22050, while the sum is 37.

The spelling of 100521970705 in words is "one hundred billion, five hundred twenty-one million, nine hundred seventy thousand, seven hundred five".