27971773339780 has 12 divisors (see below), whose sum is σ = 58740724013580. Its totient is φ = 11188709335904.

The previous prime is 27971773339721. The next prime is 27971773339799. The reversal of 27971773339780 is 8793337717972.

It can be written as a sum of positive squares in 2 ways, for example, as 15279483574404 + 12692289765376 = 3908898^2 + 3562624^2 .

It is a super-3 number, since 3×27971773339780³ (a number of 41 digits) contains 333 as substring.

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, 699294333475 + ... + 699294333514.

It is an arithmetic number, because the mean of its divisors is an integer number (4895060334465).

Almost surely, 2^{27971773339780} is an apocalyptic number.

27971773339780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27971773339780 is an abundant number, since it is smaller than the sum of its proper divisors (30768950673800).

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

27971773339780 is a wasteful number, since it uses less digits than its factorization.

27971773339780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398588666998 (or 1398588666996 counting only the distinct ones).

The product of its (nonzero) digits is 588110544, while the sum is 73.

The spelling of 27971773339780 in words is "twenty-seven trillion, nine hundred seventy-one billion, seven hundred seventy-three million, three hundred thirty-nine thousand, seven hundred eighty".