20732078442 has 16 divisors (see below), whose sum is σ = 43903225152. Its totient is φ = 6504181440.

The previous prime is 20732078441. The next prime is 20732078443. The reversal of 20732078442 is 24487023702.

It is an interprime number because it is at equal distance from previous prime (20732078441) and next prime (20732078443).

It is a super-2 number, since 2×20732078442² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20732078442.

It is not an unprimeable number, because it can be changed into a prime (20732078441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101627734 + ... + 101627937.

It is an arithmetic number, because the mean of its divisors is an integer number (2743951572).

Almost surely, 2^20732078442 is an apocalyptic number.

20732078442 is an abundant number, since it is smaller than the sum of its proper divisors (23171146710).

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

20732078442 is a wasteful number, since it uses less digits than its factorization.

20732078442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203255693.

The product of its (nonzero) digits is 150528, while the sum is 39.

The spelling of 20732078442 in words is "twenty billion, seven hundred thirty-two million, seventy-eight thousand, four hundred forty-two".