65067220740 has 96 divisors (see below), whose sum is σ = 186682890240. Its totient is φ = 16924311936.

The previous prime is 65067220733. The next prime is 65067220807. The reversal of 65067220740 is 4702276056.

It is a happy number.

It is a super-2 number, since 2×65067220740² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1889557 + ... + 1923683.

It is an arithmetic number, because the mean of its divisors is an integer number (1944613440).

Almost surely, 2^65067220740 is an apocalyptic number.

65067220740 is a gapful number since it is divisible by the number (60) 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 65067220740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93341445120).

65067220740 is an abundant number, since it is smaller than the sum of its proper divisors (121615669500).

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

65067220740 is a wasteful number, since it uses less digits than its factorization.

65067220740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34921 (or 34919 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

Adding to 65067220740 its reverse (4702276056), we get a palindrome (69769496796).

The spelling of 65067220740 in words is "sixty-five billion, sixty-seven million, two hundred twenty thousand, seven hundred forty".