21745141152427 has 8 divisors (see below), whose sum is σ = 27110825332992. Its totient is φ = 16944265833000.

The previous prime is 21745141152353. The next prime is 21745141152467. The reversal of 21745141152427 is 72425114154712.

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

It is a de Polignac number, because none of the positive numbers 2^k-21745141152427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21745141152467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141202215199 + ... + 141202215352.

It is an arithmetic number, because the mean of its divisors is an integer number (3388853166624).

Almost surely, 2^{21745141152427} is an apocalyptic number.

21745141152427 is a deficient number, since it is larger than the sum of its proper divisors (5365684180565).

21745141152427 is a wasteful number, since it uses less digits than its factorization.

21745141152427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282404430569.

The product of its digits is 627200, while the sum is 46.

The spelling of 21745141152427 in words is "twenty-one trillion, seven hundred forty-five billion, one hundred forty-one million, one hundred fifty-two thousand, four hundred twenty-seven".