20607236435665 has 16 divisors (see below), whose sum is σ = 27485741088576. Its totient is φ = 14704305928000.

The previous prime is 20607236435641. The next prime is 20607236435711. The reversal of 20607236435665 is 56653463270602.

It is not a de Polignac number, because 20607236435665 - 2⁹ = 20607236435153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3534686011 + ... + 3534691840.

It is an arithmetic number, because the mean of its divisors is an integer number (1717858818036).

Almost surely, 2^{20607236435665} is an apocalyptic number.

It is an amenable number.

20607236435665 is a deficient number, since it is larger than the sum of its proper divisors (6878504652911).

20607236435665 is a wasteful number, since it uses less digits than its factorization.

20607236435665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7069377920.

The product of its (nonzero) digits is 32659200, while the sum is 55.

The spelling of 20607236435665 in words is "twenty trillion, six hundred seven billion, two hundred thirty-six million, four hundred thirty-five thousand, six hundred sixty-five".