21623077036 has 36 divisors (see below), whose sum is σ = 44039822904. Its totient is φ = 9250510720.

The previous prime is 21623077013. The next prime is 21623077169. The reversal of 21623077036 is 63077032612.

It is a junction number, because it is equal to n+sod(n) for n = 21623076986 and 21623077004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305766 + ... + 1322221.

It is an arithmetic number, because the mean of its divisors is an integer number (1223328414).

Almost surely, 2^21623077036 is an apocalyptic number.

It is an amenable number.

21623077036 is an abundant number, since it is smaller than the sum of its proper divisors (22416745868).

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

21623077036 is a wasteful number, since it uses less digits than its factorization.

21623077036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628030 (or 2628017 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 21623077036 in words is "twenty-one billion, six hundred twenty-three million, seventy-seven thousand, thirty-six".