36666702021 has 4 divisors (see below), whose sum is σ = 48888936032. Its totient is φ = 24444468012.

The previous prime is 36666702019. The next prime is 36666702041. The reversal of 36666702021 is 12020766663.

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.

It is not a de Polignac number, because 36666702021 - 2¹ = 36666702019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36666702001) 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, 6111117001 + ... + 6111117006.

It is an arithmetic number, because the mean of its divisors is an integer number (12222234008).

Almost surely, 2^36666702021 is an apocalyptic number.

It is an amenable number.

36666702021 is a deficient number, since it is larger than the sum of its proper divisors (12222234011).

36666702021 is a wasteful number, since it uses less digits than its factorization.

36666702021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12222234010.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 36666702021 in words is "thirty-six billion, six hundred sixty-six million, seven hundred two thousand, twenty-one".