101561635723 has 2 divisors, whose sum is σ = 101561635724. Its totient is φ = 101561635722.

The previous prime is 101561635717. The next prime is 101561635727. The reversal of 101561635723 is 327536165101.

It is a strong prime.

It is an emirp because it is prime and its reverse (327536165101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101561635723 - 2⁵ = 101561635691 is a prime.

It is not a weakly prime, because it can be changed into another prime (101561635727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50780817861 + 50780817862.

It is an arithmetic number, because the mean of its divisors is an integer number (50780817862).

Almost surely, 2^101561635723 is an apocalyptic number.

101561635723 is a deficient number, since it is larger than the sum of its proper divisors (1).

101561635723 is an equidigital number, since it uses as much as digits as its factorization.

101561635723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 101561635723 in words is "one hundred one billion, five hundred sixty-one million, six hundred thirty-five thousand, seven hundred twenty-three".