40401146173 has 2 divisors, whose sum is σ = 40401146174. Its totient is φ = 40401146172.

The previous prime is 40401146143. The next prime is 40401146183. The reversal of 40401146173 is 37164110404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30820260249 + 9580885924 = 175557^2 + 97882^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40401146173 is a prime.

It is a super-2 number, since 2×40401146173² (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 (40401146113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200573086 + 20200573087.

It is an arithmetic number, because the mean of its divisors is an integer number (20200573087).

Almost surely, 2^40401146173 is an apocalyptic number.

It is an amenable number.

40401146173 is a deficient number, since it is larger than the sum of its proper divisors (1).

40401146173 is an equidigital number, since it uses as much as digits as its factorization.

40401146173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 40401146173 its reverse (37164110404), we get a palindrome (77565256577).

The spelling of 40401146173 in words is "forty billion, four hundred one million, one hundred forty-six thousand, one hundred seventy-three".