20215254132 has 192 divisors, whose sum is σ = 57660825600. Its totient is φ = 6097006080.

The previous prime is 20215254107. The next prime is 20215254133. The reversal of 20215254132 is 23145251202.

20215254132 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 525 + 4 + 132 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20215254096 and 20215254105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215254133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9276219 + ... + 9278397.

It is an arithmetic number, because the mean of its divisors is an integer number (300316800).

Almost surely, 2^20215254132 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 20215254132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28830412800).

20215254132 is an abundant number, since it is smaller than the sum of its proper divisors (37445571468).

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

20215254132 is a wasteful number, since it uses less digits than its factorization.

20215254132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403 (or 2395 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20215254132 in words is "twenty billion, two hundred fifteen million, two hundred fifty-four thousand, one hundred thirty-two".