64422266262420 has 384 divisors, whose sum is σ = 210895639621632. Its totient is φ = 14520343552000.

The previous prime is 64422266262407. The next prime is 64422266262427. The reversal of 64422266262420 is 2426266222446.

It is a super-2 number, since 2×64422266262420² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64422266262420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64422266262427) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 501952297 + ... + 502080623.

It is an arithmetic number, because the mean of its divisors is an integer number (549207394848).

Almost surely, 2^{64422266262420} is an apocalyptic number.

64422266262420 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 64422266262420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105447819810816).

64422266262420 is an abundant number, since it is smaller than the sum of its proper divisors (146473373359212).

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

64422266262420 is a wasteful number, since it uses less digits than its factorization.

64422266262420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128911 (or 128909 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 48.

The spelling of 64422266262420 in words is "sixty-four trillion, four hundred twenty-two billion, two hundred sixty-six million, two hundred sixty-two thousand, four hundred twenty".