20775657763 has 8 divisors (see below), whose sum is σ = 23856139520. Its totient is φ = 17723308680.

The previous prime is 20775657751. The next prime is 20775657803. The reversal of 20775657763 is 36775657702.

It is a happy number.

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

It is not a de Polignac number, because 20775657763 - 2¹⁷ = 20775526691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20775657713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7031583 + ... + 7034536.

It is an arithmetic number, because the mean of its divisors is an integer number (2982017440).

Almost surely, 2^20775657763 is an apocalyptic number.

20775657763 is a deficient number, since it is larger than the sum of its proper divisors (3080481757).

20775657763 is a wasteful number, since it uses less digits than its factorization.

20775657763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14066337.

The product of its (nonzero) digits is 12965400, while the sum is 55.

The spelling of 20775657763 in words is "twenty billion, seven hundred seventy-five million, six hundred fifty-seven thousand, seven hundred sixty-three".