64220450424 has 64 divisors (see below), whose sum is σ = 173300887200. Its totient is φ = 19714461696.

The previous prime is 64220450419. The next prime is 64220450443. The reversal of 64220450424 is 42405402246.

It is a super-2 number, since 2×64220450424² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102589 + ... + 372780.

Almost surely, 2^64220450424 is an apocalyptic number.

It is an amenable number.

64220450424 is an abundant number, since it is smaller than the sum of its proper divisors (109080436776).

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

64220450424 is a wasteful number, since it uses less digits than its factorization.

64220450424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475824 (or 475820 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

The spelling of 64220450424 in words is "sixty-four billion, two hundred twenty million, four hundred fifty thousand, four hundred twenty-four".