65123243660 has 48 divisors (see below), whose sum is σ = 144007718400. Its totient is φ = 24669526464.

The previous prime is 65123243657. The next prime is 65123243693. The reversal of 65123243660 is 6634232156.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097021 + ... + 1154859.

It is an arithmetic number, because the mean of its divisors is an integer number (3000160800).

Almost surely, 2^65123243660 is an apocalyptic number.

It is an amenable number.

65123243660 is an abundant number, since it is smaller than the sum of its proper divisors (78884474740).

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

65123243660 is a wasteful number, since it uses less digits than its factorization.

65123243660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60830 (or 60828 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 65123243660 in words is "sixty-five billion, one hundred twenty-three million, two hundred forty-three thousand, six hundred sixty".