164147810820 has 96 divisors (see below), whose sum is σ = 548110983168. Its totient is φ = 35888214912.

The previous prime is 164147810819. The next prime is 164147810833. The reversal of 164147810820 is 28018741461.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8486604 + ... + 8505923.

It is an arithmetic number, because the mean of its divisors is an integer number (5709489408).

Almost surely, 2^164147810820 is an apocalyptic number.

164147810820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164147810820 is an abundant number, since it is smaller than the sum of its proper divisors (383963172348).

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

164147810820 is a wasteful number, since it uses less digits than its factorization.

164147810820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16992569 (or 16992567 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 164147810820 in words is "one hundred sixty-four billion, one hundred forty-seven million, eight hundred ten thousand, eight hundred twenty".