21464166036 has 48 divisors (see below), whose sum is σ = 51701436864. Its totient is φ = 6926470656.

The previous prime is 21464166023. The next prime is 21464166037. The reversal of 21464166036 is 63066146412.

It is a junction number, because it is equal to n+sod(n) for n = 21464165985 and 21464166003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21464166037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125751 + ... + 242366.

It is an arithmetic number, because the mean of its divisors is an integer number (1077113268).

Almost surely, 2^21464166036 is an apocalyptic number.

It is an amenable number.

21464166036 is an abundant number, since it is smaller than the sum of its proper divisors (30237270828).

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

21464166036 is a wasteful number, since it uses less digits than its factorization.

21464166036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368280 (or 368278 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 21464166036 in words is "twenty-one billion, four hundred sixty-four million, one hundred sixty-six thousand, thirty-six".