2978632783585 has 4 divisors (see below), whose sum is σ = 3574359340308. Its totient is φ = 2382906226864.

The previous prime is 2978632783583. The next prime is 2978632783619. The reversal of 2978632783585 is 5853872368792.

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 1054763918289 + 1923868865296 = 1027017^2 + 1387036^2 .

It is a cyclic number.

It is not a de Polignac number, because 2978632783585 - 2¹ = 2978632783583 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2978632783583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297863278354 + ... + 297863278363.

It is an arithmetic number, because the mean of its divisors is an integer number (893589835077).

Almost surely, 2^{2978632783585} is an apocalyptic number.

It is an amenable number.

2978632783585 is a deficient number, since it is larger than the sum of its proper divisors (595726556723).

2978632783585 is an equidigital number, since it uses as much as digits as its factorization.

2978632783585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595726556722.

The product of its digits is 1219276800, while the sum is 73.

The spelling of 2978632783585 in words is "two trillion, nine hundred seventy-eight billion, six hundred thirty-two million, seven hundred eighty-three thousand, five hundred eighty-five".