101639963 has 2 divisors, whose sum is σ = 101639964. Its totient is φ = 101639962.

The previous prime is 101639947. The next prime is 101640023. The reversal of 101639963 is 369936101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101639963 - 2⁴ = 101639947 is a prime.

It is not a weakly prime, because it can be changed into another prime (101639663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50819981 + 50819982.

It is an arithmetic number, because the mean of its divisors is an integer number (50819982).

Almost surely, 2^101639963 is an apocalyptic number.

101639963 is a deficient number, since it is larger than the sum of its proper divisors (1).

101639963 is an equidigital number, since it uses as much as digits as its factorization.

101639963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 101639963 is about 10081.6646938886. The cubic root of 101639963 is about 466.6824825139.

The spelling of 101639963 in words is "one hundred one million, six hundred thirty-nine thousand, nine hundred sixty-three".