20266265356 has 24 divisors (see below), whose sum is σ = 37035147744. Its totient is φ = 9685441920.

The previous prime is 20266265351. The next prime is 20266265413. The reversal of 20266265356 is 65356266202.

It is a super-2 number, since 2×20266265356² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20266265351) 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, 46096 + ... + 206536.

It is an arithmetic number, because the mean of its divisors is an integer number (1543131156).

Almost surely, 2^20266265356 is an apocalyptic number.

It is an amenable number.

20266265356 is a deficient number, since it is larger than the sum of its proper divisors (16768882388).

20266265356 is a wasteful number, since it uses less digits than its factorization.

20266265356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161841 (or 161839 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 20266265356 in words is "twenty billion, two hundred sixty-six million, two hundred sixty-five thousand, three hundred fifty-six".