20432316524978 has 16 divisors (see below), whose sum is σ = 32743068119520. Its totient is φ = 9534011008896.

The previous prime is 20432316524957. The next prime is 20432316524981. The reversal of 20432316524978 is 87942561323402.

It is a Curzon 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, 4012628351 + ... + 4012633442.

It is an arithmetic number, because the mean of its divisors is an integer number (2046441757470).

It is a 1-persistent number, because it is pandigital, but 2⋅20432316524978 = 40864633049956 is not.

Almost surely, 2^{20432316524978} is an apocalyptic number.

20432316524978 is a deficient number, since it is larger than the sum of its proper divisors (12310751594542).

20432316524978 is a wasteful number, since it uses less digits than its factorization.

20432316524978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8025261881.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 20432316524978 in words is "twenty trillion, four hundred thirty-two billion, three hundred sixteen million, five hundred twenty-four thousand, nine hundred seventy-eight".