101681403779 has 2 divisors, whose sum is σ = 101681403780. Its totient is φ = 101681403778.

The previous prime is 101681403749. The next prime is 101681403841. The reversal of 101681403779 is 977304186101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101681403779 - 2³⁶ = 32961927043 is a prime.

It is not a weakly prime, because it can be changed into another prime (101681403709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50840701889 + 50840701890.

It is an arithmetic number, because the mean of its divisors is an integer number (50840701890).

Almost surely, 2^101681403779 is an apocalyptic number.

101681403779 is a deficient number, since it is larger than the sum of its proper divisors (1).

101681403779 is an equidigital number, since it uses as much as digits as its factorization.

101681403779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 101681403779 in words is "one hundred one billion, six hundred eighty-one million, four hundred three thousand, seven hundred seventy-nine".