21602465145755 has 8 divisors (see below), whose sum is σ = 27917031880752. Its totient is φ = 15952589646048.

The previous prime is 21602465145743. The next prime is 21602465145769. The reversal of 21602465145755 is 55754156420612.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21602465145755 - 2¹⁸ = 21602464883611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21602465145697 and 21602465145706.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166172808749 + ... + 166172808878.

It is an arithmetic number, because the mean of its divisors is an integer number (3489628985094).

Almost surely, 2^{21602465145755} is an apocalyptic number.

21602465145755 is a deficient number, since it is larger than the sum of its proper divisors (6314566734997).

21602465145755 is a wasteful number, since it uses less digits than its factorization.

21602465145755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332345617645.

The product of its (nonzero) digits is 10080000, while the sum is 53.

The spelling of 21602465145755 in words is "twenty-one trillion, six hundred two billion, four hundred sixty-five million, one hundred forty-five thousand, seven hundred fifty-five".