21024154524 has 48 divisors (see below), whose sum is σ = 51993815328. Its totient is φ = 6589237248.

The previous prime is 21024154519. The next prime is 21024154553. The reversal of 21024154524 is 42545142012.

It is a junction number, because it is equal to n+sod(n) for n = 21024154491 and 21024154500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155784 + ... + 257520.

It is an arithmetic number, because the mean of its divisors is an integer number (1083204486).

Almost surely, 2^21024154524 is an apocalyptic number.

It is an amenable number.

21024154524 is an abundant number, since it is smaller than the sum of its proper divisors (30969660804).

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

21024154524 is a wasteful number, since it uses less digits than its factorization.

21024154524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102774 (or 102772 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 21024154524 its reverse (42545142012), we get a palindrome (63569296536).

The spelling of 21024154524 in words is "twenty-one billion, twenty-four million, one hundred fifty-four thousand, five hundred twenty-four".