37971618011 has 2 divisors, whose sum is σ = 37971618012. Its totient is φ = 37971618010.

The previous prime is 37971617947. The next prime is 37971618043. The reversal of 37971618011 is 11081617973.

It is a strong prime.

It is an emirp because it is prime and its reverse (11081617973) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37971618011 - 2⁶ = 37971617947 is a prime.

It is a super-2 number, since 2×37971618011² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37971618071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18985809005 + 18985809006.

It is an arithmetic number, because the mean of its divisors is an integer number (18985809006).

Almost surely, 2^37971618011 is an apocalyptic number.

37971618011 is a deficient number, since it is larger than the sum of its proper divisors (1).

37971618011 is an equidigital number, since it uses as much as digits as its factorization.

37971618011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 44.

The spelling of 37971618011 in words is "thirty-seven billion, nine hundred seventy-one million, six hundred eighteen thousand, eleven".