140844684633691 has 2 divisors, whose sum is σ = 140844684633692. Its totient is φ = 140844684633690.

The previous prime is 140844684633689. The next prime is 140844684633749. The reversal of 140844684633691 is 196336486448041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140844684633691 - 2¹ = 140844684633689 is a prime.

Together with 140844684633689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (140844684673691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70422342316845 + 70422342316846.

It is an arithmetic number, because the mean of its divisors is an integer number (70422342316846).

Almost surely, 2^{140844684633691} is an apocalyptic number.

140844684633691 is a deficient number, since it is larger than the sum of its proper divisors (1).

140844684633691 is an equidigital number, since it uses as much as digits as its factorization.

140844684633691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 286654464, while the sum is 67.

The spelling of 140844684633691 in words is "one hundred forty trillion, eight hundred forty-four billion, six hundred eighty-four million, six hundred thirty-three thousand, six hundred ninety-one".