20061550432 has 96 divisors (see below), whose sum is σ = 49556586240. Its totient is φ = 7766254080.

The previous prime is 20061550409. The next prime is 20061550433. The reversal of 20061550432 is 23405516002.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20061550432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061550433) 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, 360919 + ... + 412777.

It is an arithmetic number, because the mean of its divisors is an integer number (516214440).

Almost surely, 2^20061550432 is an apocalyptic number.

20061550432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20061550432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24778293120).

20061550432 is an abundant number, since it is smaller than the sum of its proper divisors (29495035808).

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

20061550432 is a wasteful number, since it uses less digits than its factorization.

20061550432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52044 (or 52036 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 20061550432 in words is "twenty billion, sixty-one million, five hundred fifty thousand, four hundred thirty-two".