64221250530 has 32 divisors (see below), whose sum is σ = 154367083584. Its totient is φ = 17099435456.

The previous prime is 64221250529. The next prime is 64221250547. The reversal of 64221250530 is 3505212246.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1619544 + ... + 1658723.

It is an arithmetic number, because the mean of its divisors is an integer number (4823971362).

Almost surely, 2^64221250530 is an apocalyptic number.

64221250530 is an abundant number, since it is smaller than the sum of its proper divisors (90145833054).

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

64221250530 is a wasteful number, since it uses less digits than its factorization.

64221250530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278930.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 64221250530 its reverse (3505212246), we get a palindrome (67726462776).

The spelling of 64221250530 in words is "sixty-four billion, two hundred twenty-one million, two hundred fifty thousand, five hundred thirty".