27877811803 has 2 divisors, whose sum is σ = 27877811804. Its totient is φ = 27877811802.

The previous prime is 27877811659. The next prime is 27877811821. The reversal of 27877811803 is 30811877872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27877811803 is a prime.

It is a super-2 number, since 2×27877811803² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27877812803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13938905901 + 13938905902.

It is an arithmetic number, because the mean of its divisors is an integer number (13938905902).

Almost surely, 2^27877811803 is an apocalyptic number.

27877811803 is a deficient number, since it is larger than the sum of its proper divisors (1).

27877811803 is an equidigital number, since it uses as much as digits as its factorization.

27877811803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1053696, while the sum is 52.

The spelling of 27877811803 in words is "twenty-seven billion, eight hundred seventy-seven million, eight hundred eleven thousand, eight hundred three".