65634047760 has 80 divisors (see below), whose sum is σ = 203496528960. Its totient is φ = 17499747840.

The previous prime is 65634047741. The next prime is 65634047761. The reversal of 65634047760 is 6774043656.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×65634047760² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (65634047761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1944306 + ... + 1977774.

It is an arithmetic number, because the mean of its divisors is an integer number (2543706612).

Almost surely, 2^65634047760 is an apocalyptic number.

65634047760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65634047760 is an abundant number, since it is smaller than the sum of its proper divisors (137862481200).

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

65634047760 is a wasteful number, since it uses less digits than its factorization.

65634047760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41656 (or 41650 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 48.

The spelling of 65634047760 in words is "sixty-five billion, six hundred thirty-four million, forty-seven thousand, seven hundred sixty".