21699894330 has 80 divisors (see below), whose sum is σ = 59051782944. Its totient is φ = 5716902240.

The previous prime is 21699894323. The next prime is 21699894331. The reversal of 21699894330 is 3349899612.

21699894330 is a `hidden beast` number, since 216 + 9 + 9 + 8 + 94 + 330 = 666.

It is a super-2 number, since 2×21699894330² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (21699894331) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 94156 + ... + 228615.

Almost surely, 2^21699894330 is an apocalyptic number.

21699894330 is an abundant number, since it is smaller than the sum of its proper divisors (37351888614).

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

21699894330 is a wasteful number, since it uses less digits than its factorization.

21699894330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322873 (or 322864 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 21699894330 in words is "twenty-one billion, six hundred ninety-nine million, eight hundred ninety-four thousand, three hundred thirty".