28105453815 has 16 divisors (see below), whose sum is σ = 46014511488. Its totient is φ = 14640980256.

The previous prime is 28105453787. The next prime is 28105453823. The reversal of 28105453815 is 51835450182.

It is not a de Polignac number, because 28105453815 - 2¹² = 28105449719 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21786529 + ... + 21787818.

It is an arithmetic number, because the mean of its divisors is an integer number (2875906968).

Almost surely, 2^28105453815 is an apocalyptic number.

28105453815 is a deficient number, since it is larger than the sum of its proper divisors (17909057673).

28105453815 is a wasteful number, since it uses less digits than its factorization.

28105453815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43574398.

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 28105453815 in words is "twenty-eight billion, one hundred five million, four hundred fifty-three thousand, eight hundred fifteen".