64651362122130 has 128 divisors (see below), whose sum is σ = 178994303262720. Its totient is φ = 14638728149760.

The previous prime is 64651362122119. The next prime is 64651362122131. The reversal of 64651362122130 is 3122126315646.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (64651362122131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 722163511 + ... + 722253029.

It is an arithmetic number, because the mean of its divisors is an integer number (1398392994240).

Almost surely, 2^{64651362122130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64651362122130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89497151631360).

64651362122130 is an abundant number, since it is smaller than the sum of its proper divisors (114342941140590).

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

64651362122130 is a wasteful number, since it uses less digits than its factorization.

64651362122130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121784.

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 64651362122130 its reverse (3122126315646), we get a palindrome (67773488437776).

The spelling of 64651362122130 in words is "sixty-four trillion, six hundred fifty-one billion, three hundred sixty-two million, one hundred twenty-two thousand, one hundred thirty".