64217922280 has 64 divisors (see below), whose sum is σ = 157924961280. Its totient is φ = 23396275200.

The previous prime is 64217922259. The next prime is 64217922287. The reversal of 64217922280 is 8222971246.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64217922287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1502116 + ... + 1544275.

It is an arithmetic number, because the mean of its divisors is an integer number (2467577520).

Almost surely, 2^64217922280 is an apocalyptic number.

It is an amenable number.

64217922280 is an abundant number, since it is smaller than the sum of its proper divisors (93707039000).

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

64217922280 is a wasteful number, since it uses less digits than its factorization.

64217922280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046450 (or 3046446 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 64217922280 in words is "sixty-four billion, two hundred seventeen million, nine hundred twenty-two thousand, two hundred eighty".