101643562603 has 16 divisors (see below), whose sum is σ = 114527179872. Its totient is φ = 90149452800.

The previous prime is 101643562597. The next prime is 101643562609. The reversal of 101643562603 is 306265346101.

It is an interprime number because it is at equal distance from previous prime (101643562597) and next prime (101643562609).

It is a de Polignac number, because none of the positive numbers 2^k-101643562603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101643562609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876726 + ... + 985867.

It is an arithmetic number, because the mean of its divisors is an integer number (7157948742).

Almost surely, 2^101643562603 is an apocalyptic number.

101643562603 is a deficient number, since it is larger than the sum of its proper divisors (12883617269).

101643562603 is an equidigital number, since it uses as much as digits as its factorization.

101643562603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862667 (or 1862645 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 101643562603 in words is "one hundred one billion, six hundred forty-three million, five hundred sixty-two thousand, six hundred three".