36994066681 has 8 divisors (see below), whose sum is σ = 43461561024. Its totient is φ = 31043971920.

The previous prime is 36994066651. The next prime is 36994066693. The reversal of 36994066681 is 18666049963.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 36994066681 - 2⁹ = 36994066169 is a prime.

It is a super-2 number, since 2×36994066681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36994066651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129349741 + ... + 129350026.

It is an arithmetic number, because the mean of its divisors is an integer number (5432695128).

Almost surely, 2^36994066681 is an apocalyptic number.

It is an amenable number.

36994066681 is a deficient number, since it is larger than the sum of its proper divisors (6467494343).

36994066681 is a wasteful number, since it uses less digits than its factorization.

36994066681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258699791.

The product of its (nonzero) digits is 10077696, while the sum is 58.

The spelling of 36994066681 in words is "thirty-six billion, nine hundred ninety-four million, sixty-six thousand, six hundred eighty-one".