64418303540 has 48 divisors (see below), whose sum is σ = 136629872064. Its totient is φ = 25510214400.

The previous prime is 64418303533. The next prime is 64418303557. The reversal of 64418303540 is 4530381446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64418303494 and 64418303503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3674195 + ... + 3691685.

It is an arithmetic number, because the mean of its divisors is an integer number (2846455668).

Almost surely, 2^64418303540 is an apocalyptic number.

It is an amenable number.

64418303540 is an abundant number, since it is smaller than the sum of its proper divisors (72211568524).

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

64418303540 is a wasteful number, since it uses less digits than its factorization.

64418303540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19328 (or 19326 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 64418303540 its reverse (4530381446), we get a palindrome (68948684986).

The spelling of 64418303540 in words is "sixty-four billion, four hundred eighteen million, three hundred three thousand, five hundred forty".