87845092857 has 12 divisors (see below), whose sum is σ = 131262782820. Its totient is φ = 56543967648.

The previous prime is 87845092843. The next prime is 87845092871. The reversal of 87845092857 is 75829054878.

87845092857 is a `hidden beast` number, since 8 + 78 + 4 + 509 + 2 + 8 + 57 = 666.

It is an interprime number because it is at equal distance from previous prime (87845092843) and next prime (87845092871).

It can be written as a sum of positive squares in 2 ways, for example, as 25714046736 + 62131046121 = 160356^2 + 249261^2 .

It is not a de Polignac number, because 87845092857 - 2¹⁰ = 87845091833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87845092794 and 87845092803.

It is not an unprimeable number, because it can be changed into a prime (87845092807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168285358 + ... + 168285879.

It is an arithmetic number, because the mean of its divisors is an integer number (10938565235).

Almost surely, 2^87845092857 is an apocalyptic number.

87845092857 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

87845092857 is a deficient number, since it is larger than the sum of its proper divisors (43417689963).

87845092857 is a wasteful number, since it uses less digits than its factorization.

87845092857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336571272 (or 336571269 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 63.

The spelling of 87845092857 in words is "eighty-seven billion, eight hundred forty-five million, ninety-two thousand, eight hundred fifty-seven".