21146532060545 has 16 divisors (see below), whose sum is σ = 26479333009152. Its totient is φ = 16181573580480.

The previous prime is 21146532060517. The next prime is 21146532060611. The reversal of 21146532060545 is 54506023564112.

It is not a de Polignac number, because 21146532060545 - 2²⁴ = 21146515283329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21146532060496 and 21146532060505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16743380 + ... + 17962010.

It is an arithmetic number, because the mean of its divisors is an integer number (1654958313072).

Almost surely, 2^{21146532060545} is an apocalyptic number.

It is an amenable number.

21146532060545 is a deficient number, since it is larger than the sum of its proper divisors (5332800948607).

21146532060545 is a wasteful number, since it uses less digits than its factorization.

21146532060545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369552.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 21146532060545 in words is "twenty-one trillion, one hundred forty-six billion, five hundred thirty-two million, sixty thousand, five hundred forty-five".