37867887432161 has 4 divisors (see below), whose sum is σ = 37867900157952. Its totient is φ = 37867874706372.

The previous prime is 37867887432143. The next prime is 37867887432163. The reversal of 37867887432161 is 16123478876873.

37867887432161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 37867887432161 - 2¹⁰ = 37867887431137 is a prime.

It is a super-3 number, since 3×37867887432161³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37867887432163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754160 + ... + 8735246.

It is an arithmetic number, because the mean of its divisors is an integer number (9466975039488).

Almost surely, 2^{37867887432161} is an apocalyptic number.

It is an amenable number.

37867887432161 is a deficient number, since it is larger than the sum of its proper divisors (12725791).

37867887432161 is an equidigital number, since it uses as much as digits as its factorization.

37867887432161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12725790.

The product of its digits is 455196672, while the sum is 71.

The spelling of 37867887432161 in words is "thirty-seven trillion, eight hundred sixty-seven billion, eight hundred eighty-seven million, four hundred thirty-two thousand, one hundred sixty-one".