2115428257905 has 32 divisors (see below), whose sum is σ = 3388300554240. Its totient is φ = 1127023699200.

The previous prime is 2115428257903. The next prime is 2115428257907. The reversal of 2115428257905 is 5097528245112.

It is an interprime number because it is at equal distance from previous prime (2115428257903) and next prime (2115428257907).

It is not a de Polignac number, because 2115428257905 - 2¹ = 2115428257903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115428257903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122037619 + ... + 122054951.

It is an arithmetic number, because the mean of its divisors is an integer number (105884392320).

Almost surely, 2^{2115428257905} is an apocalyptic number.

It is an amenable number.

2115428257905 is a deficient number, since it is larger than the sum of its proper divisors (1272872296335).

2115428257905 is a wasteful number, since it uses less digits than its factorization.

2115428257905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25561.

The product of its (nonzero) digits is 2016000, while the sum is 51.

The spelling of 2115428257905 in words is "two trillion, one hundred fifteen billion, four hundred twenty-eight million, two hundred fifty-seven thousand, nine hundred five".