960635663861 has 4 divisors (see below), whose sum is σ = 962522964300. Its totient is φ = 958748363424.

The previous prime is 960635663849. The next prime is 960635663917. The reversal of 960635663861 is 168366536069.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 168366536069 = 33203 ⋅5070823.

It can be written as a sum of positive squares in 2 ways, for example, as 484024926961 + 476610736900 = 695719^2 + 690370^2 .

It is a cyclic number.

It is not a de Polignac number, because 960635663861 - 2³⁸ = 685757756917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 960635663861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (960635665861) 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, 943649456 + ... + 943650473.

It is an arithmetic number, because the mean of its divisors is an integer number (240630741075).

Almost surely, 2^960635663861 is an apocalyptic number.

It is an amenable number.

960635663861 is a deficient number, since it is larger than the sum of its proper divisors (1887300439).

960635663861 is a wasteful number, since it uses less digits than its factorization.

960635663861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887300438.

The product of its (nonzero) digits is 25194240, while the sum is 59.

The spelling of 960635663861 in words is "nine hundred sixty billion, six hundred thirty-five million, six hundred sixty-three thousand, eight hundred sixty-one".