65111421100 has 72 divisors (see below), whose sum is σ = 162248990400. Its totient is φ = 22430721600.

The previous prime is 65111421091. The next prime is 65111421121. The reversal of 65111421100 is 112411156.

It is a happy number.

65111421100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1536790 + ... + 1578589.

It is an arithmetic number, because the mean of its divisors is an integer number (2253458200).

Almost surely, 2^65111421100 is an apocalyptic number.

It is an amenable number.

65111421100 is an abundant number, since it is smaller than the sum of its proper divisors (97137569300).

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

65111421100 is a wasteful number, since it uses less digits than its factorization.

65111421100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115423 (or 3115416 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 65111421100 its reverse (112411156), we get a palindrome (65223832256).

The spelling of 65111421100 in words is "sixty-five billion, one hundred eleven million, four hundred twenty-one thousand, one hundred".