2085961636778 has 16 divisors (see below), whose sum is σ = 3161013311040. Its totient is φ = 1032301384416.

The previous prime is 2085961636769. The next prime is 2085961636831. The reversal of 2085961636778 is 8776361695802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2327243 + ... + 3096446.

It is an arithmetic number, because the mean of its divisors is an integer number (197563331940).

Almost surely, 2^{2085961636778} is an apocalyptic number.

2085961636778 is a deficient number, since it is larger than the sum of its proper divisors (1075051674262).

2085961636778 is a wasteful number, since it uses less digits than its factorization.

2085961636778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425661.

The product of its (nonzero) digits is 182891520, while the sum is 68.

The spelling of 2085961636778 in words is "two trillion, eighty-five billion, nine hundred sixty-one million, six hundred thirty-six thousand, seven hundred seventy-eight".