20010401532 has 144 divisors (see below), whose sum is σ = 59070211200. Its totient is φ = 5647121280.

The previous prime is 20010401519. The next prime is 20010401539. The reversal of 20010401532 is 23510401002.

20010401532 is a `hidden beast` number, since 200 + 10 + 401 + 53 + 2 = 666.

It is a super-3 number, since 3×20010401532³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010401539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 421378 + ... + 466454.

It is an arithmetic number, because the mean of its divisors is an integer number (410209800).

Almost surely, 2^20010401532 is an apocalyptic number.

20010401532 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 20010401532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29535105600).

20010401532 is an abundant number, since it is smaller than the sum of its proper divisors (39059809668).

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

20010401532 is a wasteful number, since it uses less digits than its factorization.

20010401532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45176 (or 45171 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 20010401532 its reverse (23510401002), we get a palindrome (43520802534).

The spelling of 20010401532 in words is "twenty billion, ten million, four hundred one thousand, five hundred thirty-two".