101640889771 has 2 divisors, whose sum is σ = 101640889772. Its totient is φ = 101640889770.

The previous prime is 101640889697. The next prime is 101640889799. The reversal of 101640889771 is 177988046101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101640889771 - 2¹⁹ = 101640365483 is a prime.

It is not a weakly prime, because it can be changed into another prime (101740889771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50820444885 + 50820444886.

It is an arithmetic number, because the mean of its divisors is an integer number (50820444886).

Almost surely, 2^101640889771 is an apocalyptic number.

101640889771 is a deficient number, since it is larger than the sum of its proper divisors (1).

101640889771 is an equidigital number, since it uses as much as digits as its factorization.

101640889771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 52.

The spelling of 101640889771 in words is "one hundred one billion, six hundred forty million, eight hundred eighty-nine thousand, seven hundred seventy-one".