20247032976438 has 16 divisors (see below), whose sum is σ = 40685980959936. Its totient is φ = 6717025157640.

The previous prime is 20247032976437. The next prime is 20247032976461. The reversal of 20247032976438 is 83467923074202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20247032976437) 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, 7996457256 + ... + 7996459787.

It is an arithmetic number, because the mean of its divisors is an integer number (2542873809996).

Almost surely, 2^{20247032976438} is an apocalyptic number.

20247032976438 is an abundant number, since it is smaller than the sum of its proper divisors (20438947983498).

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

20247032976438 is a wasteful number, since it uses less digits than its factorization.

20247032976438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15992917259.

The product of its (nonzero) digits is 24385536, while the sum is 57.

The spelling of 20247032976438 in words is "twenty trillion, two hundred forty-seven billion, thirty-two million, nine hundred seventy-six thousand, four hundred thirty-eight".