20451024530 has 16 divisors (see below), whose sum is σ = 36845729280. Its totient is φ = 8172879792.

The previous prime is 20451024493. The next prime is 20451024551. The reversal of 20451024530 is 3542015402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20451024530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929840 + ... + 951579.

It is an arithmetic number, because the mean of its divisors is an integer number (2302858080).

Almost surely, 2^20451024530 is an apocalyptic number.

20451024530 is a deficient number, since it is larger than the sum of its proper divisors (16394704750).

20451024530 is a wasteful number, since it uses less digits than its factorization.

20451024530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882513.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20451024530 its reverse (3542015402), we get a palindrome (23993039932).

The spelling of 20451024530 in words is "twenty billion, four hundred fifty-one million, twenty-four thousand, five hundred thirty".