21307419288 has 48 divisors (see below), whose sum is σ = 58498123320. Its totient is φ = 7005177216.

The previous prime is 21307419283. The next prime is 21307419293. The reversal of 21307419288 is 88291470312.

It is a happy number.

21307419288 is a `hidden beast` number, since 21 + 307 + 41 + 9 + 288 = 666.

It is an interprime number because it is at equal distance from previous prime (21307419283) and next prime (21307419293).

It is a super-2 number, since 2×21307419288² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21307419281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2021706 + ... + 2032217.

Almost surely, 2^21307419288 is an apocalyptic number.

It is an amenable number.

21307419288 is an abundant number, since it is smaller than the sum of its proper divisors (37190704032).

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

21307419288 is a wasteful number, since it uses less digits than its factorization.

21307419288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054008 (or 4054001 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 21307419288 in words is "twenty-one billion, three hundred seven million, four hundred nineteen thousand, two hundred eighty-eight".