19152140822777 has 4 divisors (see below), whose sum is σ = 19152817676916. Its totient is φ = 19151463968640.

The previous prime is 19152140822729. The next prime is 19152140822807. The reversal of 19152140822777 is 77722804125191.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3824101491961 + 15328039330816 = 1955531^2 + 3915104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19152140822777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19152140822707) 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, 338384624 + ... + 338441217.

It is an arithmetic number, because the mean of its divisors is an integer number (4788204419229).

Almost surely, 2^{19152140822777} is an apocalyptic number.

It is an amenable number.

19152140822777 is a deficient number, since it is larger than the sum of its proper divisors (676854139).

19152140822777 is an equidigital number, since it uses as much as digits as its factorization.

19152140822777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676854138.

The product of its (nonzero) digits is 3951360, while the sum is 56.

The spelling of 19152140822777 in words is "nineteen trillion, one hundred fifty-two billion, one hundred forty million, eight hundred twenty-two thousand, seven hundred seventy-seven".