20211260836 has 24 divisors (see below), whose sum is σ = 39319180544. Its totient is φ = 9027361440.

The previous prime is 20211260827. The next prime is 20211260857. The reversal of 20211260836 is 63806211202.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 20211260798 and 20211260807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6267390 + ... + 6270613.

Almost surely, 2^20211260836 is an apocalyptic number.

20211260836 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20211260836 is a deficient number, since it is larger than the sum of its proper divisors (19107919708).

20211260836 is a wasteful number, since it uses less digits than its factorization.

20211260836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12538051 (or 12538049 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 20211260836 in words is "twenty billion, two hundred eleven million, two hundred sixty thousand, eight hundred thirty-six".