15720086106 has 12 divisors (see below), whose sum is σ = 34060186602. Its totient is φ = 5240028696.

The previous prime is 15720086089. The next prime is 15720086113. The reversal of 15720086106 is 60168002751.

15720086106 is a `hidden beast` number, since 1 + 572 + 0 + 0 + 86 + 1 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9774288225 + 5945797881 = 98865^2 + 77109^2 .

It is a super-2 number, since 2×15720086106² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 436669041 + ... + 436669076.

Almost surely, 2^15720086106 is an apocalyptic number.

15720086106 is an abundant number, since it is smaller than the sum of its proper divisors (18340100496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15720086106 is a wasteful number, since it uses less digits than its factorization.

15720086106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873338125 (or 873338122 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

Adding to 15720086106 its reverse (60168002751), we get a palindrome (75888088857).

The spelling of 15720086106 in words is "fifteen billion, seven hundred twenty million, eighty-six thousand, one hundred six".