164637503447540 has 12 divisors (see below), whose sum is σ = 345738757239876. Its totient is φ = 65855001379008.

The previous prime is 164637503447531. The next prime is 164637503447551. The reversal of 164637503447540 is 45744305736461.

It can be written as a sum of positive squares in 2 ways, for example, as 123065209762576 + 41572293684964 = 11093476^2 + 6447658^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164637503447540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4115937586169 + ... + 4115937586208.

It is an arithmetic number, because the mean of its divisors is an integer number (28811563103323).

Almost surely, 2^{164637503447540} is an apocalyptic number.

164637503447540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164637503447540 is an abundant number, since it is smaller than the sum of its proper divisors (181101253792336).

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

164637503447540 is a wasteful number, since it uses less digits than its factorization.

164637503447540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231875172386 (or 8231875172384 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 59.

The spelling of 164637503447540 in words is "one hundred sixty-four trillion, six hundred thirty-seven billion, five hundred three million, four hundred forty-seven thousand, five hundred forty".