20530452430 has 16 divisors (see below), whose sum is σ = 37581168240. Its totient is φ = 8072991232.

The previous prime is 20530452427. The next prime is 20530452461. The reversal of 20530452430 is 3425403502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17398099 + ... + 17399278.

It is an arithmetic number, because the mean of its divisors is an integer number (2348823015).

Almost surely, 2^20530452430 is an apocalyptic number.

20530452430 is a deficient number, since it is larger than the sum of its proper divisors (17050715810).

20530452430 is a wasteful number, since it uses less digits than its factorization.

20530452430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34797443.

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 20530452430 its reverse (3425403502), we get a palindrome (23955855932).

The spelling of 20530452430 in words is "twenty billion, five hundred thirty million, four hundred fifty-two thousand, four hundred thirty".