21699611454 has 32 divisors (see below), whose sum is σ = 44142405120. Its totient is φ = 7110148032.

The previous prime is 21699611419. The next prime is 21699611473. The reversal of 21699611454 is 45411699612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6762 + ... + 208434.

It is an arithmetic number, because the mean of its divisors is an integer number (1379450160).

Almost surely, 2^21699611454 is an apocalyptic number.

21699611454 is an abundant number, since it is smaller than the sum of its proper divisors (22442793666).

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

21699611454 is a wasteful number, since it uses less digits than its factorization.

21699611454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201984.

The product of its digits is 466560, while the sum is 48.

The spelling of 21699611454 in words is "twenty-one billion, six hundred ninety-nine million, six hundred eleven thousand, four hundred fifty-four".