20471806078084 has 27 divisors (see below), whose sum is σ = 35894409639543. Its totient is φ = 10216298042568.

The previous prime is 20471806078079. The next prime is 20471806078117. The reversal of 20471806078084 is 48087060817402.

The square root of 20471806078084 is 4524578.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×20471806078084² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5492835829 + ... + 5492839555.

Almost surely, 2^{20471806078084} is an apocalyptic number.

20471806078084 is the 4524578-th square number.

It is an amenable number.

20471806078084 is a deficient number, since it is larger than the sum of its proper divisors (15422603561459).

20471806078084 is an frugal number, since it uses more digits than its factorization.

20471806078084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672 (or 4336 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 55.

The spelling of 20471806078084 in words is "twenty trillion, four hundred seventy-one billion, eight hundred six million, seventy-eight thousand, eighty-four".