20154552432 has 80 divisors (see below), whose sum is σ = 59526523392. Its totient is φ = 5756256000.

The previous prime is 20154552391. The next prime is 20154552437. The reversal of 20154552432 is 23425545102.

It is a happy number.

It is a super-2 number, since 2×20154552432² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20154552393 and 20154552402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154552437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010557 + ... + 1030307.

Almost surely, 2^20154552432 is an apocalyptic number.

It is an amenable number.

20154552432 is an abundant number, since it is smaller than the sum of its proper divisors (39371970960).

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

20154552432 is a wasteful number, since it uses less digits than its factorization.

20154552432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22806 (or 22800 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 20154552432 in words is "twenty billion, one hundred fifty-four million, five hundred fifty-two thousand, four hundred thirty-two".