20430437476 has 24 divisors (see below), whose sum is σ = 37331824320. Its totient is φ = 9770786592.

The previous prime is 20430437471. The next prime is 20430437513. The reversal of 20430437476 is 67473403402.

It is not an unprimeable number, because it can be changed into a prime (20430437471) by changing a digit.

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, 810600 + ... + 835423.

It is an arithmetic number, because the mean of its divisors is an integer number (1555492680).

Almost surely, 2^20430437476 is an apocalyptic number.

It is an amenable number.

20430437476 is a deficient number, since it is larger than the sum of its proper divisors (16901386844).

20430437476 is a wasteful number, since it uses less digits than its factorization.

20430437476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646163 (or 1646161 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 40.

The spelling of 20430437476 in words is "twenty billion, four hundred thirty million, four hundred thirty-seven thousand, four hundred seventy-six".