2815992855109 has 6 divisors (see below), whose sum is σ = 3275746790694. Its totient is φ = 2413708161480.

The previous prime is 2815992855043. The next prime is 2815992855127. The reversal of 2815992855109 is 9015582995182.

It can be written as a sum of positive squares in only one way, i.e., 2810534896225 + 5457958884 = 1676465^2 + 73878^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2815992855109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815992855209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28734620922 + ... + 28734621019.

It is an arithmetic number, because the mean of its divisors is an integer number (545957798449).

Almost surely, 2^{2815992855109} is an apocalyptic number.

It is an amenable number.

2815992855109 is a deficient number, since it is larger than the sum of its proper divisors (459753935585).

2815992855109 is an equidigital number, since it uses as much as digits as its factorization.

2815992855109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57469241955 (or 57469241948 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 64.

The spelling of 2815992855109 in words is "two trillion, eight hundred fifteen billion, nine hundred ninety-two million, eight hundred fifty-five thousand, one hundred nine".