101401645649 has 2 divisors, whose sum is σ = 101401645650. Its totient is φ = 101401645648.

The previous prime is 101401645633. The next prime is 101401645693. The reversal of 101401645649 is 946546104101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100936467025 + 465178624 = 317705^2 + 21568^2 .

It is a cyclic number.

It is not a de Polignac number, because 101401645649 - 2⁴ = 101401645633 is a prime.

It is not a weakly prime, because it can be changed into another prime (101401642649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50700822824 + 50700822825.

It is an arithmetic number, because the mean of its divisors is an integer number (50700822825).

Almost surely, 2^101401645649 is an apocalyptic number.

It is an amenable number.

101401645649 is a deficient number, since it is larger than the sum of its proper divisors (1).

101401645649 is an equidigital number, since it uses as much as digits as its factorization.

101401645649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 101401645649 in words is "one hundred one billion, four hundred one million, six hundred forty-five thousand, six hundred forty-nine".