40161654761671 has 2 divisors, whose sum is σ = 40161654761672. Its totient is φ = 40161654761670.

The previous prime is 40161654761651. The next prime is 40161654761713. The reversal of 40161654761671 is 17616745616104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40161654761671 - 2²⁷ = 40161520543943 is a prime.

It is a super-2 number, since 2×40161654761671² (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 (40161654761611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20080827380835 + 20080827380836.

It is an arithmetic number, because the mean of its divisors is an integer number (20080827380836).

Almost surely, 2^{40161654761671} is an apocalyptic number.

40161654761671 is a deficient number, since it is larger than the sum of its proper divisors (1).

40161654761671 is an equidigital number, since it uses as much as digits as its factorization.

40161654761671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 40161654761671 in words is "forty trillion, one hundred sixty-one billion, six hundred fifty-four million, seven hundred sixty-one thousand, six hundred seventy-one".