20061421286565 has 8 divisors (see below), whose sum is σ = 32098274058528. Its totient is φ = 10699424686160.

The previous prime is 20061421286549. The next prime is 20061421286573. The reversal of 20061421286565 is 56568212416002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20061421286565 - 2⁴ = 20061421286549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668714042871 + ... + 668714042900.

It is an arithmetic number, because the mean of its divisors is an integer number (4012284257316).

Almost surely, 2^{20061421286565} is an apocalyptic number.

It is an amenable number.

20061421286565 is a deficient number, since it is larger than the sum of its proper divisors (12036852771963).

20061421286565 is a wasteful number, since it uses less digits than its factorization.

20061421286565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337428085779.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 20061421286565 in words is "twenty trillion, sixty-one billion, four hundred twenty-one million, two hundred eighty-six thousand, five hundred sixty-five".