20233671657655 has 16 divisors (see below), whose sum is σ = 25692135321600. Its totient is φ = 15254705319840.

The previous prime is 20233671657653. The next prime is 20233671657691. The reversal of 20233671657655 is 55675617633202.

It is not a de Polignac number, because 20233671657655 - 2¹ = 20233671657653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20233671657655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233671657653) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 557536875 + ... + 557573164.

It is an arithmetic number, because the mean of its divisors is an integer number (1605758457600).

Almost surely, 2^{20233671657655} is an apocalyptic number.

20233671657655 is a deficient number, since it is larger than the sum of its proper divisors (5458463663945).

20233671657655 is a wasteful number, since it uses less digits than its factorization.

20233671657655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115110254.

The product of its (nonzero) digits is 47628000, while the sum is 58.

The spelling of 20233671657655 in words is "twenty trillion, two hundred thirty-three billion, six hundred seventy-one million, six hundred fifty-seven thousand, six hundred fifty-five".