40108621157867 has 2 divisors, whose sum is σ = 40108621157868. Its totient is φ = 40108621157866.

The previous prime is 40108621157861. The next prime is 40108621157909. The reversal of 40108621157867 is 76875112680104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40108621157867 - 2¹⁴ = 40108621141483 is a prime.

It is not a weakly prime, because it can be changed into another prime (40108621157861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20054310578933 + 20054310578934.

It is an arithmetic number, because the mean of its divisors is an integer number (20054310578934).

Almost surely, 2^{40108621157867} is an apocalyptic number.

40108621157867 is a deficient number, since it is larger than the sum of its proper divisors (1).

40108621157867 is an equidigital number, since it uses as much as digits as its factorization.

40108621157867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The spelling of 40108621157867 in words is "forty trillion, one hundred eight billion, six hundred twenty-one million, one hundred fifty-seven thousand, eight hundred sixty-seven".