27621601403 has 4 divisors (see below), whose sum is σ = 30132656088. Its totient is φ = 25110546720.

The previous prime is 27621601391. The next prime is 27621601451. The reversal of 27621601403 is 30410612672.

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

It is a cyclic number.

It is not a de Polignac number, because 27621601403 - 2³⁴ = 10441732219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27621601403.

It is not an unprimeable number, because it can be changed into a prime (27621601603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255527326 + ... + 1255527347.

It is an arithmetic number, because the mean of its divisors is an integer number (7533164022).

Almost surely, 2^27621601403 is an apocalyptic number.

27621601403 is a deficient number, since it is larger than the sum of its proper divisors (2511054685).

27621601403 is a wasteful number, since it uses less digits than its factorization.

27621601403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511054684.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 27621601403 in words is "twenty-seven billion, six hundred twenty-one million, six hundred one thousand, four hundred three".