40838538773 has 2 divisors, whose sum is σ = 40838538774. Its totient is φ = 40838538772.

The previous prime is 40838538709. The next prime is 40838538827. The reversal of 40838538773 is 37783583804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38918609284 + 1919929489 = 197278^2 + 43817^2 .

It is a cyclic number.

It is not a de Polignac number, because 40838538773 - 2⁶ = 40838538709 is a prime.

It is a super-2 number, since 2×40838538773² (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 (40838508773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20419269386 + 20419269387.

It is an arithmetic number, because the mean of its divisors is an integer number (20419269387).

Almost surely, 2^40838538773 is an apocalyptic number.

It is an amenable number.

40838538773 is a deficient number, since it is larger than the sum of its proper divisors (1).

40838538773 is an equidigital number, since it uses as much as digits as its factorization.

40838538773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 40838538773 in words is "forty billion, eight hundred thirty-eight million, five hundred thirty-eight thousand, seven hundred seventy-three".