10715136721 has 4 divisors (see below), whose sum is σ = 10774998000. Its totient is φ = 10655275444.

The previous prime is 10715136683. The next prime is 10715136727. The reversal of 10715136721 is 12763151701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12763151701 = 31 ⋅411714571.

It is a cyclic number.

It is not a de Polignac number, because 10715136721 - 2¹¹ = 10715134673 is a prime.

It is a super-2 number, since 2×10715136721² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10715136727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29930371 + ... + 29930728.

It is an arithmetic number, because the mean of its divisors is an integer number (2693749500).

Almost surely, 2^10715136721 is an apocalyptic number.

It is an amenable number.

10715136721 is a deficient number, since it is larger than the sum of its proper divisors (59861279).

10715136721 is an equidigital number, since it uses as much as digits as its factorization.

10715136721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59861278.

The product of its (nonzero) digits is 8820, while the sum is 34.

The spelling of 10715136721 in words is "ten billion, seven hundred fifteen million, one hundred thirty-six thousand, seven hundred twenty-one".