40771843913 has 2 divisors, whose sum is σ = 40771843914. Its totient is φ = 40771843912.

The previous prime is 40771843909. The next prime is 40771843919. The reversal of 40771843913 is 31934817704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38364273424 + 2407570489 = 195868^2 + 49067^2 .

It is a cyclic number.

It is not a de Polignac number, because 40771843913 - 2² = 40771843909 is a prime.

It is a super-3 number, since 3×40771843913³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (40771843919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20385921956 + 20385921957.

It is an arithmetic number, because the mean of its divisors is an integer number (20385921957).

Almost surely, 2^40771843913 is an apocalyptic number.

It is an amenable number.

40771843913 is a deficient number, since it is larger than the sum of its proper divisors (1).

40771843913 is an equidigital number, since it uses as much as digits as its factorization.

40771843913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 40771843913 in words is "forty billion, seven hundred seventy-one million, eight hundred forty-three thousand, nine hundred thirteen".