101661624601 has 4 divisors (see below), whose sum is σ = 101672137600. Its totient is φ = 101651111604.

The previous prime is 101661624593. The next prime is 101661624607. The reversal of 101661624601 is 106426166101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101661624601 - 2³ = 101661624593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101661624607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5241981 + ... + 5261338.

It is an arithmetic number, because the mean of its divisors is an integer number (25418034400).

Almost surely, 2^101661624601 is an apocalyptic number.

It is an amenable number.

101661624601 is a deficient number, since it is larger than the sum of its proper divisors (10512999).

101661624601 is an equidigital number, since it uses as much as digits as its factorization.

101661624601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10512998.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 101661624601 in words is "one hundred one billion, six hundred sixty-one million, six hundred twenty-four thousand, six hundred one".