20401454532 has 24 divisors (see below), whose sum is σ = 48764453472. Its totient is φ = 6634619200.

The previous prime is 20401454527. The next prime is 20401454539. The reversal of 20401454532 is 23545410402.

It is a self number, because there is not a number n which added to its sum of digits gives 20401454532.

It is not an unprimeable number, because it can be changed into a prime (20401454539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20732694 + ... + 20733677.

It is an arithmetic number, because the mean of its divisors is an integer number (2031852228).

Almost surely, 2^20401454532 is an apocalyptic number.

It is an amenable number.

20401454532 is an abundant number, since it is smaller than the sum of its proper divisors (28362998940).

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

20401454532 is a wasteful number, since it uses less digits than its factorization.

20401454532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41466419 (or 41466417 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20401454532 its reverse (23545410402), we get a palindrome (43946864934).

The spelling of 20401454532 in words is "twenty billion, four hundred one million, four hundred fifty-four thousand, five hundred thirty-two".