36859701721 has 4 divisors (see below), whose sum is σ = 38462297472. Its totient is φ = 35257105972.

The previous prime is 36859701701. The next prime is 36859701751. The reversal of 36859701721 is 12710795863.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 36859701721 - 2⁹ = 36859701209 is a prime.

It is a super-2 number, since 2×36859701721² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36859701701) 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, 801297841 + ... + 801297886.

It is an arithmetic number, because the mean of its divisors is an integer number (9615574368).

Almost surely, 2^36859701721 is an apocalyptic number.

It is an amenable number.

36859701721 is a deficient number, since it is larger than the sum of its proper divisors (1602595751).

36859701721 is a wasteful number, since it uses less digits than its factorization.

36859701721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602595750.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 36859701721 in words is "thirty-six billion, eight hundred fifty-nine million, seven hundred one thousand, seven hundred twenty-one".