164426655327720 has 32 divisors (see below), whose sum is σ = 493279965983520. Its totient is φ = 43847108087360.

The previous prime is 164426655327703. The next prime is 164426655327731. The reversal of 164426655327720 is 27723556624461.

It is a happy number.

It is a super-3 number, since 3×164426655327720³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685111063746 + ... + 685111063985.

It is an arithmetic number, because the mean of its divisors is an integer number (15414998936985).

Almost surely, 2^{164426655327720} is an apocalyptic number.

164426655327720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164426655327720 is an abundant number, since it is smaller than the sum of its proper divisors (328853310655800).

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

164426655327720 is a wasteful number, since it uses less digits than its factorization.

164426655327720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370222127745 (or 1370222127741 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 60.

The spelling of 164426655327720 in words is "one hundred sixty-four trillion, four hundred twenty-six billion, six hundred fifty-five million, three hundred twenty-seven thousand, seven hundred twenty".