40144524293 has 2 divisors, whose sum is σ = 40144524294. Its totient is φ = 40144524292.

The previous prime is 40144524263. The next prime is 40144524307. The reversal of 40144524293 is 39242544104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35193009604 + 4951514689 = 187598^2 + 70367^2 .

It is a cyclic number.

It is not a de Polignac number, because 40144524293 - 2¹⁰ = 40144523269 is a prime.

It is a super-2 number, since 2×40144524293² (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 (40144524223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20072262146 + 20072262147.

It is an arithmetic number, because the mean of its divisors is an integer number (20072262147).

Almost surely, 2^40144524293 is an apocalyptic number.

It is an amenable number.

40144524293 is a deficient number, since it is larger than the sum of its proper divisors (1).

40144524293 is an equidigital number, since it uses as much as digits as its factorization.

40144524293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 40144524293 in words is "forty billion, one hundred forty-four million, five hundred twenty-four thousand, two hundred ninety-three".