20962775775 has 24 divisors (see below), whose sum is σ = 34663209984. Its totient is φ = 11178613600.

The previous prime is 20962775767. The next prime is 20962775777. The reversal of 20962775775 is 57757726902.

It is not a de Polignac number, because 20962775775 - 2³ = 20962775767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20962775777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 720052 + ... + 748598.

It is an arithmetic number, because the mean of its divisors is an integer number (1444300416).

Almost surely, 2^20962775775 is an apocalyptic number.

20962775775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20962775775 is a deficient number, since it is larger than the sum of its proper divisors (13700434209).

20962775775 is a wasteful number, since it uses less digits than its factorization.

20962775775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38351 (or 38346 counting only the distinct ones).

The product of its (nonzero) digits is 12965400, while the sum is 57.

The spelling of 20962775775 in words is "twenty billion, nine hundred sixty-two million, seven hundred seventy-five thousand, seven hundred seventy-five".