101649945599 has 8 divisors (see below), whose sum is σ = 104422007280. Its totient is φ = 98879187456.

The previous prime is 101649945583. The next prime is 101649945637. The reversal of 101649945599 is 995549946101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101649945599 - 2⁴ = 101649945583 is a prime.

It is a super-2 number, since 2×101649945599² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101649942599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166754 + ... + 480735.

It is an arithmetic number, because the mean of its divisors is an integer number (13052750910).

Almost surely, 2^101649945599 is an apocalyptic number.

101649945599 is a deficient number, since it is larger than the sum of its proper divisors (2772061681).

101649945599 is an equidigital number, since it uses as much as digits as its factorization.

101649945599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651769.

The product of its (nonzero) digits is 15746400, while the sum is 62.

The spelling of 101649945599 in words is "one hundred one billion, six hundred forty-nine million, nine hundred forty-five thousand, five hundred ninety-nine".