40661111155151 has 2 divisors, whose sum is σ = 40661111155152. Its totient is φ = 40661111155150.

The previous prime is 40661111155121. The next prime is 40661111155157. The reversal of 40661111155151 is 15155111116604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40661111155151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40661111155157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20330555577575 + 20330555577576.

It is an arithmetic number, because the mean of its divisors is an integer number (20330555577576).

Almost surely, 2^{40661111155151} is an apocalyptic number.

40661111155151 is a deficient number, since it is larger than the sum of its proper divisors (1).

40661111155151 is an equidigital number, since it uses as much as digits as its factorization.

40661111155151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 38.

The spelling of 40661111155151 in words is "forty trillion, six hundred sixty-one billion, one hundred eleven million, one hundred fifty-five thousand, one hundred fifty-one".