21606160354 has 8 divisors (see below), whose sum is σ = 32452397568. Its totient is φ = 10788694500.

The previous prime is 21606160349. The next prime is 21606160409. The reversal of 21606160354 is 45306160612.

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

It is a super-2 number, since 2×21606160354² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7190962 + ... + 7193965.

It is an arithmetic number, because the mean of its divisors is an integer number (4056549696).

Almost surely, 2^21606160354 is an apocalyptic number.

21606160354 is a deficient number, since it is larger than the sum of its proper divisors (10846237214).

21606160354 is a wasteful number, since it uses less digits than its factorization.

21606160354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14385680.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 21606160354 in words is "twenty-one billion, six hundred six million, one hundred sixty thousand, three hundred fifty-four".