21365676030 has 16 divisors (see below), whose sum is σ = 51277622544. Its totient is φ = 5697513600.

The previous prime is 21365676001. The next prime is 21365676037. The reversal of 21365676030 is 3067656312.

It is a super-3 number, since 3×21365676030³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 21365676030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21365676037) 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, 356094571 + ... + 356094630.

It is an arithmetic number, because the mean of its divisors is an integer number (3204851409).

Almost surely, 2^21365676030 is an apocalyptic number.

21365676030 is an abundant number, since it is smaller than the sum of its proper divisors (29911946514).

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

21365676030 is a wasteful number, since it uses less digits than its factorization.

21365676030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712189211.

The product of its (nonzero) digits is 136080, while the sum is 39.

The spelling of 21365676030 in words is "twenty-one billion, three hundred sixty-five million, six hundred seventy-six thousand, thirty".