28394012934145 has 16 divisors (see below), whose sum is σ = 34203755794752. Its totient is φ = 22628074835520.

The previous prime is 28394012934137. The next prime is 28394012934173. The reversal of 28394012934145 is 54143921049382.

It is not a de Polignac number, because 28394012934145 - 2³ = 28394012934137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8436987 + ... + 11312416.

It is an arithmetic number, because the mean of its divisors is an integer number (2137734737172).

Almost surely, 2^{28394012934145} is an apocalyptic number.

It is an amenable number.

28394012934145 is a deficient number, since it is larger than the sum of its proper divisors (5809742860607).

28394012934145 is a wasteful number, since it uses less digits than its factorization.

28394012934145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19750512.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 28394012934145 in words is "twenty-eight trillion, three hundred ninety-four billion, twelve million, nine hundred thirty-four thousand, one hundred forty-five".