36646431043 has 4 divisors (see below), whose sum is σ = 36688028328. Its totient is φ = 36604833760.

The previous prime is 36646431011. The next prime is 36646431067. The reversal of 36646431043 is 34013464663.

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

It is a cyclic number.

It is not a de Polignac number, because 36646431043 - 2⁵ = 36646431011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36646430987 and 36646431005.

It is not an unprimeable number, because it can be changed into a prime (36646431343) 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, 20797321 + ... + 20799082.

It is an arithmetic number, because the mean of its divisors is an integer number (9172007082).

Almost surely, 2^36646431043 is an apocalyptic number.

36646431043 is a deficient number, since it is larger than the sum of its proper divisors (41597285).

36646431043 is an equidigital number, since it uses as much as digits as its factorization.

36646431043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41597284.

The product of its (nonzero) digits is 373248, while the sum is 40.

The spelling of 36646431043 in words is "thirty-six billion, six hundred forty-six million, four hundred thirty-one thousand, forty-three".