140664626177 has 2 divisors, whose sum is σ = 140664626178. Its totient is φ = 140664626176.

The previous prime is 140664626159. The next prime is 140664626191. The reversal of 140664626177 is 771626466041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133377613681 + 7287012496 = 365209^2 + 85364^2 .

It is a cyclic number.

It is not a de Polignac number, because 140664626177 - 2¹⁴ = 140664609793 is a prime.

It is not a weakly prime, because it can be changed into another prime (140664626477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70332313088 + 70332313089.

It is an arithmetic number, because the mean of its divisors is an integer number (70332313089).

Almost surely, 2^140664626177 is an apocalyptic number.

It is an amenable number.

140664626177 is a deficient number, since it is larger than the sum of its proper divisors (1).

140664626177 is an equidigital number, since it uses as much as digits as its factorization.

140664626177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 140664626177 in words is "one hundred forty billion, six hundred sixty-four million, six hundred twenty-six thousand, one hundred seventy-seven".