20479311896272 has 40 divisors (see below), whose sum is σ = 40172897910600. Its totient is φ = 10112390019072.

The previous prime is 20479311896257. The next prime is 20479311896293. The reversal of 20479311896272 is 27269811397402.

It can be written as a sum of positive squares in 4 ways, for example, as 2152898860176 + 18326413036096 = 1467276^2 + 4280936^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20479311896272.

It is a congruent number.

It is an unprimeable number.

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, 7493533 + ... + 9854524.

It is an arithmetic number, because the mean of its divisors is an integer number (1004322447765).

Almost surely, 2^{20479311896272} is an apocalyptic number.

It is an amenable number.

20479311896272 is a deficient number, since it is larger than the sum of its proper divisors (19693586014328).

20479311896272 is a wasteful number, since it uses less digits than its factorization.

20479311896272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17348983 (or 17348977 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 20479311896272 in words is "twenty trillion, four hundred seventy-nine billion, three hundred eleven million, eight hundred ninety-six thousand, two hundred seventy-two".