40426641361 has 2 divisors, whose sum is σ = 40426641362. Its totient is φ = 40426641360.

The previous prime is 40426641317. The next prime is 40426641371. The reversal of 40426641361 is 16314662404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36492842961 + 3933798400 = 191031^2 + 62720^2 .

It is a cyclic number.

It is not a de Polignac number, because 40426641361 - 2²³ = 40418252753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40426641361.

It is not a weakly prime, because it can be changed into another prime (40426641371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20213320680 + 20213320681.

It is an arithmetic number, because the mean of its divisors is an integer number (20213320681).

Almost surely, 2^40426641361 is an apocalyptic number.

It is an amenable number.

40426641361 is a deficient number, since it is larger than the sum of its proper divisors (1).

40426641361 is an equidigital number, since it uses as much as digits as its factorization.

40426641361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 40426641361 in words is "forty billion, four hundred twenty-six million, six hundred forty-one thousand, three hundred sixty-one".