36406650421 has 4 divisors (see below), whose sum is σ = 36781976812. Its totient is φ = 36031324032.

The previous prime is 36406650377. The next prime is 36406650463. The reversal of 36406650421 is 12405660463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18628428196 + 17778222225 = 136486^2 + 133335^2 .

It is a cyclic number.

It is not a de Polignac number, because 36406650421 - 2²⁵ = 36373095989 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 (36406650491) 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, 187663050 + ... + 187663243.

It is an arithmetic number, because the mean of its divisors is an integer number (9195494203).

Almost surely, 2^36406650421 is an apocalyptic number.

It is an amenable number.

36406650421 is a deficient number, since it is larger than the sum of its proper divisors (375326391).

36406650421 is an equidigital number, since it uses as much as digits as its factorization.

36406650421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375326390.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 36406650421 in words is "thirty-six billion, four hundred six million, six hundred fifty thousand, four hundred twenty-one".