20650629775 has 6 divisors (see below), whose sum is σ = 25606780952. Its totient is φ = 16520503800.

The previous prime is 20650629767. The next prime is 20650629803. The reversal of 20650629775 is 57792605602.

It is not a de Polignac number, because 20650629775 - 2³ = 20650629767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 413012571 + ... + 413012620.

Almost surely, 2^20650629775 is an apocalyptic number.

20650629775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20650629775 is a deficient number, since it is larger than the sum of its proper divisors (4956151177).

20650629775 is an equidigital number, since it uses as much as digits as its factorization.

20650629775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826025201 (or 826025196 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 20650629775 in words is "twenty billion, six hundred fifty million, six hundred twenty-nine thousand, seven hundred seventy-five".