65653422912 has 672 divisors, whose sum is σ = 250451640320. Its totient is φ = 16491340800.

The previous prime is 65653422869. The next prime is 65653422917. The reversal of 65653422912 is 21922435656.

65653422912 is a `hidden beast` number, since 6 + 5 + 6 + 534 + 22 + 91 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65653422917) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 45371373 + ... + 45372819.

Almost surely, 2^65653422912 is an apocalyptic number.

65653422912 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65653422912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125225820160).

65653422912 is an abundant number, since it is smaller than the sum of its proper divisors (184798217408).

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

65653422912 is a wasteful number, since it uses less digits than its factorization.

65653422912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1501 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 65653422912 in words is "sixty-five billion, six hundred fifty-three million, four hundred twenty-two thousand, nine hundred twelve".