64351220010 has 256 divisors, whose sum is σ = 194691133440. Its totient is φ = 13224130560.

The previous prime is 64351219979. The next prime is 64351220053. The reversal of 64351220010 is 1002215346.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 113095006 + ... + 113095574.

It is an arithmetic number, because the mean of its divisors is an integer number (760512240).

Almost surely, 2^64351220010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64351220010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97345566720).

64351220010 is an abundant number, since it is smaller than the sum of its proper divisors (130339913430).

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

64351220010 is a wasteful number, since it uses less digits than its factorization.

64351220010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 64351220010 its reverse (1002215346), we get a palindrome (65353435356).

The spelling of 64351220010 in words is "sixty-four billion, three hundred fifty-one million, two hundred twenty thousand, ten".