40245550493 has 2 divisors, whose sum is σ = 40245550494. Its totient is φ = 40245550492.

The previous prime is 40245550459. The next prime is 40245550529. The reversal of 40245550493 is 39405554204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28860233689 + 11385316804 = 169883^2 + 106702^2 .

It is a cyclic number.

It is not a de Polignac number, because 40245550493 - 2¹⁰ = 40245549469 is a prime.

It is a super-2 number, since 2×40245550493² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40245550493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40245550403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122775246 + 20122775247.

It is an arithmetic number, because the mean of its divisors is an integer number (20122775247).

Almost surely, 2^40245550493 is an apocalyptic number.

It is an amenable number.

40245550493 is a deficient number, since it is larger than the sum of its proper divisors (1).

40245550493 is an equidigital number, since it uses as much as digits as its factorization.

40245550493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 40245550493 in words is "forty billion, two hundred forty-five million, five hundred fifty thousand, four hundred ninety-three".