65649013632 has 48 divisors (see below), whose sum is σ = 188911878480. Its totient is φ = 21883004160.

The previous prime is 65649013603. The next prime is 65649013637. The reversal of 65649013632 is 23631094656.

65649013632 is a `hidden beast` number, since 6 + 5 + 6 + 4 + 9 + 0 + 1 + 3 + 632 = 666.

65649013632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65649013637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28492344 + ... + 28494647.

It is an arithmetic number, because the mean of its divisors is an integer number (3935664135).

Almost surely, 2^65649013632 is an apocalyptic number.

It is an amenable number.

65649013632 is an abundant number, since it is smaller than the sum of its proper divisors (123262864848).

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

65649013632 is a wasteful number, since it uses less digits than its factorization.

65649013632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56987011 (or 56986996 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 65649013632 in words is "sixty-five billion, six hundred forty-nine million, thirteen thousand, six hundred thirty-two".