20432073984 has 72 divisors (see below), whose sum is σ = 62147574720. Its totient is φ = 5837733888.

The previous prime is 20432073983. The next prime is 20432074049. The reversal of 20432073984 is 48937023402.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432073983) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1894929 + ... + 1905680.

It is an arithmetic number, because the mean of its divisors is an integer number (863160760).

Almost surely, 2^20432073984 is an apocalyptic number.

20432073984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20432073984 is an abundant number, since it is smaller than the sum of its proper divisors (41715500736).

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

20432073984 is an equidigital number, since it uses as much as digits as its factorization.

20432073984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800635 (or 3800621 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 20432073984 in words is "twenty billion, four hundred thirty-two million, seventy-three thousand, nine hundred eighty-four".