20400972367348 has 12 divisors (see below), whose sum is σ = 35702305157092. Its totient is φ = 10200313751040.

The previous prime is 20400972367339. The next prime is 20400972367379. The reversal of 20400972367348 is 84376327900402.

It can be written as a sum of positive squares in 2 ways, for example, as 7896841857424 + 12504130509924 = 2810132^2 + 3536118^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 42841773 + ... + 43315348.

Almost surely, 2^{20400972367348} is an apocalyptic number.

It is an amenable number.

20400972367348 is a deficient number, since it is larger than the sum of its proper divisors (15301332789744).

20400972367348 is a wasteful number, since it uses less digits than its factorization.

20400972367348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86216322 (or 86216320 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 20400972367348 in words is "twenty trillion, four hundred billion, nine hundred seventy-two million, three hundred sixty-seven thousand, three hundred forty-eight".