36668371729 has 4 divisors (see below), whose sum is σ = 40001860080. Its totient is φ = 33334883380.

The previous prime is 36668371721. The next prime is 36668371769. The reversal of 36668371729 is 92717386663.

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 an emirpimes, since its reverse is a distinct semiprime: 92717386663 = 11 ⋅8428853333.

It is a cyclic number.

It is not a de Polignac number, because 36668371729 - 2³ = 36668371721 is a prime.

It is a super-2 number, since 2×36668371729² (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 (36668371721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666744159 + ... + 1666744180.

It is an arithmetic number, because the mean of its divisors is an integer number (10000465020).

Almost surely, 2^36668371729 is an apocalyptic number.

It is an amenable number.

36668371729 is a deficient number, since it is larger than the sum of its proper divisors (3333488351).

36668371729 is a wasteful number, since it uses less digits than its factorization.

36668371729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333488350.

The product of its digits is 13716864, while the sum is 58.

The spelling of 36668371729 in words is "thirty-six billion, six hundred sixty-eight million, three hundred seventy-one thousand, seven hundred twenty-nine".