164342637078 has 16 divisors (see below), whose sum is σ = 337568660400. Its totient is φ = 53300314656.

The previous prime is 164342637077. The next prime is 164342637079. The reversal of 164342637078 is 870736243461.

It is an interprime number because it is at equal distance from previous prime (164342637077) and next prime (164342637079).

It is a self number, because there is not a number n which added to its sum of digits gives 164342637078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164342637077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370140853 + ... + 370141296.

It is an arithmetic number, because the mean of its divisors is an integer number (21098041275).

Almost surely, 2^164342637078 is an apocalyptic number.

164342637078 is an abundant number, since it is smaller than the sum of its proper divisors (173226023322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164342637078 is a wasteful number, since it uses less digits than its factorization.

164342637078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740282191.

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 164342637078 in words is "one hundred sixty-four billion, three hundred forty-two million, six hundred thirty-seven thousand, seventy-eight".