40143977379673 has 2 divisors, whose sum is σ = 40143977379674. Its totient is φ = 40143977379672.

The previous prime is 40143977379637. The next prime is 40143977379721. The reversal of 40143977379673 is 37697377934104.

Together with previous prime (40143977379637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24495402214089 + 15648575165584 = 4949283^2 + 3955828^2 .

It is a cyclic number.

It is not a de Polignac number, because 40143977379673 - 2¹⁷ = 40143977248601 is a prime.

It is a super-2 number, since 2×40143977379673² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40143977379613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20071988689836 + 20071988689837.

It is an arithmetic number, because the mean of its divisors is an integer number (20071988689837).

Almost surely, 2^{40143977379673} is an apocalyptic number.

It is an amenable number.

40143977379673 is a deficient number, since it is larger than the sum of its proper divisors (1).

40143977379673 is an equidigital number, since it uses as much as digits as its factorization.

40143977379673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504094752, while the sum is 70.

The spelling of 40143977379673 in words is "forty trillion, one hundred forty-three billion, nine hundred seventy-seven million, three hundred seventy-nine thousand, six hundred seventy-three".