21887607433 has 8 divisors (see below), whose sum is σ = 22088816928. Its totient is φ = 21686529984.

The previous prime is 21887607421. The next prime is 21887607473. The reversal of 21887607433 is 33470678812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21887607433 - 2³³ = 13297672841 is a prime.

It is a super-2 number, since 2×21887607433² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21887607473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316966 + ... + 379792.

It is an arithmetic number, because the mean of its divisors is an integer number (2761102116).

Almost surely, 2^21887607433 is an apocalyptic number.

It is an amenable number.

21887607433 is a deficient number, since it is larger than the sum of its proper divisors (201209495).

21887607433 is a wasteful number, since it uses less digits than its factorization.

21887607433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66023.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 21887607433 in words is "twenty-one billion, eight hundred eighty-seven million, six hundred seven thousand, four hundred thirty-three".