164280347782 has 4 divisors (see below), whose sum is σ = 246420521676. Its totient is φ = 82140173890.

The previous prime is 164280347747. The next prime is 164280347783. The reversal of 164280347782 is 287743082461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 287743082461 = 20879 ⋅13781459.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164280347783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41070086944 + ... + 41070086947.

It is an arithmetic number, because the mean of its divisors is an integer number (61605130419).

Almost surely, 2^164280347782 is an apocalyptic number.

164280347782 is a deficient number, since it is larger than the sum of its proper divisors (82140173894).

164280347782 is an equidigital number, since it uses as much as digits as its factorization.

164280347782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82140173893.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 164280347782 in words is "one hundred sixty-four billion, two hundred eighty million, three hundred forty-seven thousand, seven hundred eighty-two".