2085415469721 has 24 divisors (see below), whose sum is σ = 3077050485600. Its totient is φ = 1360689904896.

The previous prime is 2085415469719. The next prime is 2085415469771. The reversal of 2085415469721 is 1279645145802.

2085415469721 is a `hidden beast` number, since 2 + 0 + 8 + 5 + 4 + 1 + 546 + 97 + 2 + 1 = 666.

It is not a de Polignac number, because 2085415469721 - 2¹ = 2085415469719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2085415469701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12965496 + ... + 13125353.

It is an arithmetic number, because the mean of its divisors is an integer number (128210436900).

Almost surely, 2^{2085415469721} is an apocalyptic number.

It is an amenable number.

2085415469721 is a deficient number, since it is larger than the sum of its proper divisors (991635015879).

2085415469721 is a wasteful number, since it uses less digits than its factorization.

2085415469721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26091045 (or 26091042 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 2085415469721 in words is "two trillion, eighty-five billion, four hundred fifteen million, four hundred sixty-nine thousand, seven hundred twenty-one".