2078615319485 has 4 divisors (see below), whose sum is σ = 2494338383388. Its totient is φ = 1662892255584.

The previous prime is 2078615319457. The next prime is 2078615319497. The reversal of 2078615319485 is 5849135168702.

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 1446636428644 + 631978890841 = 1202762^2 + 794971^2 .

It is a cyclic number.

It is not a de Polignac number, because 2078615319485 - 2⁶ = 2078615319421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207861531944 + ... + 207861531953.

It is an arithmetic number, because the mean of its divisors is an integer number (623584595847).

It is a 2-persistent number, because it is pandigital, and so is 2⋅2078615319485 = 4157230638970, but 3⋅2078615319485 = 6235845958455 is not.

Almost surely, 2^{2078615319485} is an apocalyptic number.

It is an amenable number.

2078615319485 is a deficient number, since it is larger than the sum of its proper divisors (415723063903).

2078615319485 is an equidigital number, since it uses as much as digits as its factorization.

2078615319485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415723063902.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 2078615319485 in words is "two trillion, seventy-eight billion, six hundred fifteen million, three hundred nineteen thousand, four hundred eighty-five".