27790926501889 has 4 divisors (see below), whose sum is σ = 28437227118256. Its totient is φ = 27144625885524.

The previous prime is 27790926501817. The next prime is 27790926501913. The reversal of 27790926501889 is 98810562909772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27790926501889 - 2¹³ = 27790926493697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27790926505889) 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, 323150308119 + ... + 323150308204.

It is an arithmetic number, because the mean of its divisors is an integer number (7109306779564).

Almost surely, 2^{27790926501889} is an apocalyptic number.

It is an amenable number.

27790926501889 is a deficient number, since it is larger than the sum of its proper divisors (646300616367).

27790926501889 is an equidigital number, since it uses as much as digits as its factorization.

27790926501889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646300616366.

The product of its (nonzero) digits is 274337280, while the sum is 73.

The spelling of 27790926501889 in words is "twenty-seven trillion, seven hundred ninety billion, nine hundred twenty-six million, five hundred one thousand, eight hundred eighty-nine".