662081872164 has 12 divisors (see below), whose sum is σ = 1544857701744. Its totient is φ = 220693957384.

The previous prime is 662081872159. The next prime is 662081872169. The reversal of 662081872164 is 461278180266.

It is an interprime number because it is at equal distance from previous prime (662081872159) and next prime (662081872169).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (662081872169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27586744662 + ... + 27586744685.

It is an arithmetic number, because the mean of its divisors is an integer number (128738141812).

Almost surely, 2^662081872164 is an apocalyptic number.

It is an amenable number.

662081872164 is an abundant number, since it is smaller than the sum of its proper divisors (882775829580).

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

662081872164 is a wasteful number, since it uses less digits than its factorization.

662081872164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55173489354 (or 55173489352 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 662081872164 in words is "six hundred sixty-two billion, eighty-one million, eight hundred seventy-two thousand, one hundred sixty-four".