65548899612 has 72 divisors (see below), whose sum is σ = 190261099392. Its totient is φ = 18639482400.

The previous prime is 65548899601. The next prime is 65548899613. The reversal of 65548899612 is 21699884556.

65548899612 is a `hidden beast` number, since 6 + 5 + 5 + 4 + 8 + 8 + 9 + 9 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 65548899612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65548899613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 563214 + ... + 669557.

Almost surely, 2^65548899612 is an apocalyptic number.

It is an amenable number.

65548899612 is an abundant number, since it is smaller than the sum of its proper divisors (124712199780).

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

65548899612 is a wasteful number, since it uses less digits than its factorization.

65548899612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232999 (or 1232994 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 63.

The spelling of 65548899612 in words is "sixty-five billion, five hundred forty-eight million, eight hundred ninety-nine thousand, six hundred twelve".