32220577456 has 60 divisors (see below), whose sum is σ = 65677987312. Its totient is φ = 15311058048.

The previous prime is 32220577453. The next prime is 32220577471. The reversal of 32220577456 is 65477502223.

It is a super-2 number, since 2×32220577456² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32220577453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1316725 + ... + 1340971.

Almost surely, 2^32220577456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32220577456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32838993656).

32220577456 is an abundant number, since it is smaller than the sum of its proper divisors (33457409856).

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

32220577456 is a wasteful number, since it uses less digits than its factorization.

32220577456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24458 (or 24429 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 32220577456 in words is "thirty-two billion, two hundred twenty million, five hundred seventy-seven thousand, four hundred fifty-six".