15709135752 has 36 divisors (see below), whose sum is σ = 42548456535. Its totient is φ = 5236024080.

The previous prime is 15709135733. The next prime is 15709135823. The reversal of 15709135752 is 25753190751.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

15709135752 is a `hidden beast` number, since 1 + 5 + 70 + 9 + 1 + 3 + 575 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7854567876 + 7854567876 = 88626^2 + 88626^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=88626.

It is a super-4 number, since 4×15709135752⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15709135698 and 15709135707.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1056127 + ... + 1070897.

Almost surely, 2^15709135752 is an apocalyptic number.

15709135752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15709135752 is an abundant number, since it is smaller than the sum of its proper divisors (26839320783).

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

15709135752 is an frugal number, since it uses more digits than its factorization.

15709135752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29554 (or 14776 counting only the distinct ones).

The product of its (nonzero) digits is 330750, while the sum is 45.

The spelling of 15709135752 in words is "fifteen billion, seven hundred nine million, one hundred thirty-five thousand, seven hundred fifty-two".