20077770888827 has 4 divisors (see below), whose sum is σ = 20090486388120. Its totient is φ = 20065055389536.

The previous prime is 20077770888821. The next prime is 20077770888841. The reversal of 20077770888827 is 72888807777002.

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 20077770888827 - 2⁴ = 20077770888811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20077770888821) 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, 6357747278 + ... + 6357750435.

It is an arithmetic number, because the mean of its divisors is an integer number (5022621597030).

Almost surely, 2^{20077770888827} is an apocalyptic number.

20077770888827 is a deficient number, since it is larger than the sum of its proper divisors (12715499293).

20077770888827 is a wasteful number, since it uses less digits than its factorization.

20077770888827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12715499292.

The product of its (nonzero) digits is 275365888, while the sum is 71.

The spelling of 20077770888827 in words is "twenty trillion, seventy-seven billion, seven hundred seventy million, eight hundred eighty-eight thousand, eight hundred twenty-seven".