20407842258 has 16 divisors (see below), whose sum is σ = 41390554176. Its totient is φ = 6706802480.

The previous prime is 20407842241. The next prime is 20407842263. The reversal of 20407842258 is 85224870402.

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 7 ways as a sum of consecutive naturals, for example, 23952441 + ... + 23953292.

It is an arithmetic number, because the mean of its divisors is an integer number (2586909636).

Almost surely, 2^20407842258 is an apocalyptic number.

20407842258 is an abundant number, since it is smaller than the sum of its proper divisors (20982711918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20407842258 is a wasteful number, since it uses less digits than its factorization.

20407842258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47905809.

The product of its (nonzero) digits is 286720, while the sum is 42.

The spelling of 20407842258 in words is "twenty billion, four hundred seven million, eight hundred forty-two thousand, two hundred fifty-eight".