9640910051 has 4 divisors (see below), whose sum is σ = 9647519400. Its totient is φ = 9634300704.

The previous prime is 9640910047. The next prime is 9640910063. The reversal of 9640910051 is 1500190469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1500190469 = 257 ⋅5837317.

It is a cyclic number.

It is not a de Polignac number, because 9640910051 - 2² = 9640910047 is a prime.

It is a super-2 number, since 2×9640910051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9640909993 and 9640910020.

It is not an unprimeable number, because it can be changed into a prime (9640910011) 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, 3302486 + ... + 3305403.

It is an arithmetic number, because the mean of its divisors is an integer number (2411879850).

Almost surely, 2^9640910051 is an apocalyptic number.

9640910051 is a deficient number, since it is larger than the sum of its proper divisors (6609349).

9640910051 is a wasteful number, since it uses less digits than its factorization.

9640910051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6609348.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 9640910051 is about 98188.1359992133. The cubic root of 9640910051 is about 2128.3318472948.

The spelling of 9640910051 in words is "nine billion, six hundred forty million, nine hundred ten thousand, fifty-one".