36554173421 has 4 divisors (see below), whose sum is σ = 37542124092. Its totient is φ = 35566222752.

The previous prime is 36554173393. The next prime is 36554173433. The reversal of 36554173421 is 12437145563.

36554173421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 17124601321 + 19429572100 = 130861^2 + 139390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36554173421 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 (36554173921) 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, 493975280 + ... + 493975353.

It is an arithmetic number, because the mean of its divisors is an integer number (9385531023).

Almost surely, 2^36554173421 is an apocalyptic number.

It is an amenable number.

36554173421 is a deficient number, since it is larger than the sum of its proper divisors (987950671).

36554173421 is an equidigital number, since it uses as much as digits as its factorization.

36554173421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987950670.

The product of its digits is 302400, while the sum is 41.

The spelling of 36554173421 in words is "thirty-six billion, five hundred fifty-four million, one hundred seventy-three thousand, four hundred twenty-one".