37370666666681 has 2 divisors, whose sum is σ = 37370666666682. Its totient is φ = 37370666666680.

The previous prime is 37370666666621. The next prime is 37370666666701. The reversal of 37370666666681 is 18666666607373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20442009008656 + 16928657658025 = 4521284^2 + 4114445^2 .

It is an emirp because it is prime and its reverse (18666666607373) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37370666666681 is a prime.

It is a super-2 number, since 2×37370666666681² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37370666666621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18685333333340 + 18685333333341.

It is an arithmetic number, because the mean of its divisors is an integer number (18685333333341).

Almost surely, 2^{37370666666681} is an apocalyptic number.

It is an amenable number.

37370666666681 is a deficient number, since it is larger than the sum of its proper divisors (1).

37370666666681 is an equidigital number, since it uses as much as digits as its factorization.

37370666666681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987614208, while the sum is 71.

The spelling of 37370666666681 in words is "thirty-seven trillion, three hundred seventy billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred eighty-one".