32551521552 has 120 divisors (see below), whose sum is σ = 99480427488. Its totient is φ = 9854208000.

The previous prime is 32551521551. The next prime is 32551521553. The reversal of 32551521552 is 25512515523.

32551521552 is a `hidden beast` number, since 3 + 2 + 5 + 51 + 52 + 1 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (32551521551) and next prime (32551521553).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (32551521551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1655008 + ... + 1674560.

Almost surely, 2^32551521552 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 32551521552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49740213744).

32551521552 is an abundant number, since it is smaller than the sum of its proper divisors (66928905936).

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

32551521552 is a wasteful number, since it uses less digits than its factorization.

32551521552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20629 (or 20620 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The spelling of 32551521552 in words is "thirty-two billion, five hundred fifty-one million, five hundred twenty-one thousand, five hundred fifty-two".