65954229824 has 56 divisors (see below), whose sum is σ = 153617371200. Its totient is φ = 27502142976.

The previous prime is 65954229821. The next prime is 65954229827. The reversal of 65954229824 is 42892245956.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65954229821) and next prime (65954229827).

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×65954229824² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 65954229824.

It is not an unprimeable number, because it can be changed into a prime (65954229821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972874 + ... + 2006025.

Almost surely, 2^65954229824 is an apocalyptic number.

65954229824 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65954229824 is an abundant number, since it is smaller than the sum of its proper divisors (87663141376).

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

65954229824 is a wasteful number, since it uses less digits than its factorization.

65954229824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978955 (or 3978945 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 56.

The spelling of 65954229824 in words is "sixty-five billion, nine hundred fifty-four million, two hundred twenty-nine thousand, eight hundred twenty-four".