10989071057 has 4 divisors (see below), whose sum is σ = 10990086756. Its totient is φ = 10988055360.

The previous prime is 10989071047. The next prime is 10989071063. The reversal of 10989071057 is 75017098901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75017098901 = 139 ⋅539691359.

It can be written as a sum of positive squares in 2 ways, for example, as 10658704081 + 330366976 = 103241^2 + 18176^2 .

It is a cyclic number.

It is not a de Polignac number, because 10989071057 - 2⁶ = 10989070993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10989071017) 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, 491444 + ... + 513317.

It is an arithmetic number, because the mean of its divisors is an integer number (2747521689).

Almost surely, 2^10989071057 is an apocalyptic number.

It is an amenable number.

10989071057 is a deficient number, since it is larger than the sum of its proper divisors (1015699).

10989071057 is a wasteful number, since it uses less digits than its factorization.

10989071057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015698.

The product of its (nonzero) digits is 158760, while the sum is 47.

The spelling of 10989071057 in words is "ten billion, nine hundred eighty-nine million, seventy-one thousand, fifty-seven".