20546521430 has 16 divisors (see below), whose sum is σ = 37983299760. Its totient is φ = 7996483872.

The previous prime is 20546521421. The next prime is 20546521441. The reversal of 20546521430 is 3412564502.

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, 27765200 + ... + 27765939.

It is an arithmetic number, because the mean of its divisors is an integer number (2373956235).

Almost surely, 2^20546521430 is an apocalyptic number.

20546521430 is a deficient number, since it is larger than the sum of its proper divisors (17436778330).

20546521430 is a wasteful number, since it uses less digits than its factorization.

20546521430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55531183.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 20546521430 in words is "twenty billion, five hundred forty-six million, five hundred twenty-one thousand, four hundred thirty".