20841265356 has 48 divisors (see below), whose sum is σ = 50770347264. Its totient is φ = 6641584576.

The previous prime is 20841265349. The next prime is 20841265381. The reversal of 20841265356 is 65356214802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540826 + ... + 578078.

It is an arithmetic number, because the mean of its divisors is an integer number (1057715568).

Almost surely, 2^20841265356 is an apocalyptic number.

It is an amenable number.

20841265356 is an abundant number, since it is smaller than the sum of its proper divisors (29929081908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20841265356 is a wasteful number, since it uses less digits than its factorization.

20841265356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39310 (or 39308 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 20841265356 in words is "twenty billion, eight hundred forty-one million, two hundred sixty-five thousand, three hundred fifty-six".