21675036898 has 8 divisors (see below), whose sum is σ = 32578773840. Its totient is φ = 10815445620.

The previous prime is 21675036893. The next prime is 21675036899. The reversal of 21675036898 is 89863057612.

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

It is a super-2 number, since 2×21675036898² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21675036893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11035188 + ... + 11037151.

It is an arithmetic number, because the mean of its divisors is an integer number (4072346730).

Almost surely, 2^21675036898 is an apocalyptic number.

21675036898 is a deficient number, since it is larger than the sum of its proper divisors (10903736942).

21675036898 is a wasteful number, since it uses less digits than its factorization.

21675036898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22072832.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 21675036898 in words is "twenty-one billion, six hundred seventy-five million, thirty-six thousand, eight hundred ninety-eight".