40321801189 has 2 divisors, whose sum is σ = 40321801190. Its totient is φ = 40321801188.

The previous prime is 40321801183. The next prime is 40321801241. The reversal of 40321801189 is 98110812304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37577822500 + 2743978689 = 193850^2 + 52383^2 .

It is a cyclic number.

It is not a de Polignac number, because 40321801189 - 2⁹ = 40321800677 is a prime.

It is a super-2 number, since 2×40321801189² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40321801183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160900594 + 20160900595.

It is an arithmetic number, because the mean of its divisors is an integer number (20160900595).

Almost surely, 2^40321801189 is an apocalyptic number.

It is an amenable number.

40321801189 is a deficient number, since it is larger than the sum of its proper divisors (1).

40321801189 is an equidigital number, since it uses as much as digits as its factorization.

40321801189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 40321801189 in words is "forty billion, three hundred twenty-one million, eight hundred one thousand, one hundred eighty-nine".