27772001659 has 4 divisors (see below), whose sum is σ = 28979480016. Its totient is φ = 26564523304.

The previous prime is 27772001657. The next prime is 27772001753. The reversal of 27772001659 is 95610027772.

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 27772001659 - 2¹ = 27772001657 is a prime.

It is a super-2 number, since 2×27772001659² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27772001657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603739144 + ... + 603739189.

It is an arithmetic number, because the mean of its divisors is an integer number (7244870004).

Almost surely, 2^27772001659 is an apocalyptic number.

27772001659 is a deficient number, since it is larger than the sum of its proper divisors (1207478357).

27772001659 is a wasteful number, since it uses less digits than its factorization.

27772001659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207478356.

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 27772001659 in words is "twenty-seven billion, seven hundred seventy-two million, one thousand, six hundred fifty-nine".