20430673355 has 32 divisors (see below), whose sum is σ = 26126489088. Its totient is φ = 15284160000.

The previous prime is 20430673339. The next prime is 20430673363. The reversal of 20430673355 is 55337603402.

It is not a de Polignac number, because 20430673355 - 2⁴ = 20430673339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11157290 + ... + 11159120.

It is an arithmetic number, because the mean of its divisors is an integer number (816452784).

Almost surely, 2^20430673355 is an apocalyptic number.

20430673355 is a deficient number, since it is larger than the sum of its proper divisors (5695815733).

20430673355 is a wasteful number, since it uses less digits than its factorization.

20430673355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627.

The product of its (nonzero) digits is 226800, while the sum is 38.

The spelling of 20430673355 in words is "twenty billion, four hundred thirty million, six hundred seventy-three thousand, three hundred fifty-five".