20578346192 has 20 divisors (see below), whose sum is σ = 41604048480. Its totient is φ = 9841817568.

The previous prime is 20578346183. The next prime is 20578346209. The reversal of 20578346192 is 29164387502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27959342 + ... + 27960077.

It is an arithmetic number, because the mean of its divisors is an integer number (2080202424).

It is a 1-persistent number, because it is pandigital, but 2⋅20578346192 = 41156692384 is not.

Almost surely, 2^20578346192 is an apocalyptic number.

It is an amenable number.

20578346192 is an abundant number, since it is smaller than the sum of its proper divisors (21025702288).

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

20578346192 is a wasteful number, since it uses less digits than its factorization.

20578346192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55919450 (or 55919444 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 20578346192 in words is "twenty billion, five hundred seventy-eight million, three hundred forty-six thousand, one hundred ninety-two".