65577021412 has 24 divisors (see below), whose sum is σ = 136856393856. Its totient is φ = 26882505408.

The previous prime is 65577021407. The next prime is 65577021437. The reversal of 65577021412 is 21412077556.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50913193 + ... + 50914480.

It is an arithmetic number, because the mean of its divisors is an integer number (5702349744).

Almost surely, 2^65577021412 is an apocalyptic number.

It is an amenable number.

65577021412 is an abundant number, since it is smaller than the sum of its proper divisors (71279372444).

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

65577021412 is a wasteful number, since it uses less digits than its factorization.

65577021412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101827707 (or 101827705 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

Adding to 65577021412 its reverse (21412077556), we get a palindrome (86989098968).

The spelling of 65577021412 in words is "sixty-five billion, five hundred seventy-seven million, twenty-one thousand, four hundred twelve".