21761126236 has 24 divisors (see below), whose sum is σ = 38159364096. Its totient is φ = 10858476720.

The previous prime is 21761126213. The next prime is 21761126249. The reversal of 21761126236 is 63262116712.

It is a junction number, because it is equal to n+sod(n) for n = 21761126195 and 21761126204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5270805 + ... + 5274931.

It is an arithmetic number, because the mean of its divisors is an integer number (1589973504).

Almost surely, 2^21761126236 is an apocalyptic number.

It is an amenable number.

21761126236 is a deficient number, since it is larger than the sum of its proper divisors (16398237860).

21761126236 is a wasteful number, since it uses less digits than its factorization.

21761126236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489 (or 6487 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The spelling of 21761126236 in words is "twenty-one billion, seven hundred sixty-one million, one hundred twenty-six thousand, two hundred thirty-six".