27421743424045 has 4 divisors (see below), whose sum is σ = 32906092108860. Its totient is φ = 21937394739232.

The previous prime is 27421743423979. The next prime is 27421743424099. The reversal of 27421743424045 is 54042434712472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17151840024484 + 10269903399561 = 4141478^2 + 3204669^2 .

It is a cyclic number.

It is not a de Polignac number, because 27421743424045 - 2⁹ = 27421743423533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27421743424045.

It is a congruent number.

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, 2742174342400 + ... + 2742174342409.

It is an arithmetic number, because the mean of its divisors is an integer number (8226523027215).

Almost surely, 2^{27421743424045} is an apocalyptic number.

It is an amenable number.

27421743424045 is a deficient number, since it is larger than the sum of its proper divisors (5484348684815).

27421743424045 is an equidigital number, since it uses as much as digits as its factorization.

27421743424045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484348684814.

The product of its (nonzero) digits is 6021120, while the sum is 49.

The spelling of 27421743424045 in words is "twenty-seven trillion, four hundred twenty-one billion, seven hundred forty-three million, four hundred twenty-four thousand, forty-five".