64621315000 has 160 divisors (see below), whose sum is σ = 166821787440. Its totient is φ = 23264000000.

The previous prime is 64621314983. The next prime is 64621315021. The reversal of 64621315000 is 51312646.

It is a self number, because there is not a number n which added to its sum of digits gives 64621315000.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 5549184 + ... + 5560816.

Almost surely, 2^64621315000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64621315000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83410893720).

64621315000 is an abundant number, since it is smaller than the sum of its proper divisors (102200472440).

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

64621315000 is a wasteful number, since it uses less digits than its factorization.

64621315000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11771 (or 11752 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 64621315000 its reverse (51312646), we get a palindrome (64672627646).

The spelling of 64621315000 in words is "sixty-four billion, six hundred twenty-one million, three hundred fifteen thousand".