36878438308644 has 81 divisors (see below), whose sum is σ = 93459748768113. Its totient is φ = 12261343716864.

The previous prime is 36878438308601. The next prime is 36878438308667. The reversal of 36878438308644 is 44680383487863.

The square root of 36878438308644 is 6072762.

It is a perfect power (a square), and thus also a powerful number.

36878438308644 is a `hidden beast` number, since 3 + 6 + 8 + 78 + 438 + 3 + 0 + 86 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34897976100 + 36843540332544 = 186810^2 + 6069888^2 .

It is a super-2 number, since 2×36878438308644² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17453116932 + ... + 17453119044.

Almost surely, 2^{36878438308644} is an apocalyptic number.

36878438308644 is the 6072762-nd square number.

It is an amenable number.

36878438308644 is an abundant number, since it is smaller than the sum of its proper divisors (56581310459469).

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

36878438308644 is an frugal number, since it uses more digits than its factorization.

36878438308644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194 (or 2597 counting only the distinct ones).

The product of its (nonzero) digits is 1783627776, while the sum is 72.

The spelling of 36878438308644 in words is "thirty-six trillion, eight hundred seventy-eight billion, four hundred thirty-eight million, three hundred eight thousand, six hundred forty-four".