164070872843085 has 24 divisors (see below), whose sum is σ = 306265629308184. Its totient is φ = 80773352784000.

The previous prime is 164070872843081. The next prime is 164070872843093. The reversal of 164070872843085 is 580348278070461.

It is a happy number.

164070872843085 is a `hidden beast` number, since 1 + 6 + 40 + 7 + 0 + 8 + 7 + 284 + 308 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2056338792036 + 162014534051049 = 1433994^2 + 12728493^2 .

It is not a de Polignac number, because 164070872843085 - 2² = 164070872843081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164070872843081) 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, 140231514666 + ... + 140231515835.

It is an arithmetic number, because the mean of its divisors is an integer number (12761067887841).

Almost surely, 2^{164070872843085} is an apocalyptic number.

164070872843085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164070872843085 is a deficient number, since it is larger than the sum of its proper divisors (142194756465099).

164070872843085 is a wasteful number, since it uses less digits than its factorization.

164070872843085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280463030525 (or 280463030522 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 63.

The spelling of 164070872843085 in words is "one hundred sixty-four trillion, seventy billion, eight hundred seventy-two million, eight hundred forty-three thousand, eighty-five".