40637122173623 has 2 divisors, whose sum is σ = 40637122173624. Its totient is φ = 40637122173622.

The previous prime is 40637122173563. The next prime is 40637122173677. The reversal of 40637122173623 is 32637122173604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40637122173623 - 2¹⁸ = 40637121911479 is a prime.

It is a super-2 number, since 2×40637122173623² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40637122178623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20318561086811 + 20318561086812.

It is an arithmetic number, because the mean of its divisors is an integer number (20318561086812).

Almost surely, 2^{40637122173623} is an apocalyptic number.

40637122173623 is a deficient number, since it is larger than the sum of its proper divisors (1).

40637122173623 is an equidigital number, since it uses as much as digits as its factorization.

40637122173623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 47.

The spelling of 40637122173623 in words is "forty trillion, six hundred thirty-seven billion, one hundred twenty-two million, one hundred seventy-three thousand, six hundred twenty-three".