21746225355371 has 16 divisors (see below), whose sum is σ = 24125512884480. Its totient is φ = 19434005002080.

The previous prime is 21746225355329. The next prime is 21746225355377. The reversal of 21746225355371 is 17355352264712.

It is a cyclic number.

It is not a de Polignac number, because 21746225355371 - 2⁴² = 17348178844267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21746225355377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94299410 + ... + 94529736.

It is an arithmetic number, because the mean of its divisors is an integer number (1507844555280).

Almost surely, 2^{21746225355371} is an apocalyptic number.

21746225355371 is a deficient number, since it is larger than the sum of its proper divisors (2379287529109).

21746225355371 is a wasteful number, since it uses less digits than its factorization.

21746225355371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375874.

The product of its digits is 10584000, while the sum is 53.

The spelling of 21746225355371 in words is "twenty-one trillion, seven hundred forty-six billion, two hundred twenty-five million, three hundred fifty-five thousand, three hundred seventy-one".