21888673160 has 16 divisors (see below), whose sum is σ = 49249514700. Its totient is φ = 8755469248.

The previous prime is 21888673159. The next prime is 21888673181. The reversal of 21888673160 is 6137688812.

It can be written as a sum of positive squares in 2 ways, for example, as 21351638884 + 537034276 = 146122^2 + 23174^2 .

It is a super-2 number, since 2×21888673160² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21888673099 and 21888673108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273608375 + ... + 273608454.

Almost surely, 2^21888673160 is an apocalyptic number.

21888673160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21888673160 is an abundant number, since it is smaller than the sum of its proper divisors (27360841540).

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

21888673160 is a wasteful number, since it uses less digits than its factorization.

21888673160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547216840 (or 547216836 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 21888673160 in words is "twenty-one billion, eight hundred eighty-eight million, six hundred seventy-three thousand, one hundred sixty".