20625216767 has 8 divisors (see below), whose sum is σ = 21392388192. Its totient is φ = 19869084000.

The previous prime is 20625216761. The next prime is 20625216779. The reversal of 20625216767 is 76761252602.

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

It is a cyclic number.

It is not a de Polignac number, because 20625216767 - 2⁸ = 20625216511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625216761) 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 7 ways as a sum of consecutive naturals, for example, 2755859 + ... + 2763332.

It is an arithmetic number, because the mean of its divisors is an integer number (2674048524).

Almost surely, 2^20625216767 is an apocalyptic number.

20625216767 is a deficient number, since it is larger than the sum of its proper divisors (767171425).

20625216767 is a wasteful number, since it uses less digits than its factorization.

20625216767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519329.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 20625216767 in words is "twenty billion, six hundred twenty-five million, two hundred sixteen thousand, seven hundred sixty-seven".