101981985799019 has 8 divisors (see below), whose sum is σ = 102786955603968. Its totient is φ = 101177046651240.

The previous prime is 101981985798961. The next prime is 101981985799027. The reversal of 101981985799019 is 910997589189101.

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 101981985799019 - 2¹⁶ = 101981985733483 is a prime.

It is a super-2 number, since 2×101981985799019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101981985799069) 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, 961937 + ... + 14313954.

It is an arithmetic number, because the mean of its divisors is an integer number (12848369450496).

Almost surely, 2^{101981985799019} is an apocalyptic number.

101981985799019 is a deficient number, since it is larger than the sum of its proper divisors (804969804949).

101981985799019 is a wasteful number, since it uses less digits than its factorization.

101981985799019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15328585.

The product of its (nonzero) digits is 132269760, while the sum is 77.

The spelling of 101981985799019 in words is "one hundred one trillion, nine hundred eighty-one billion, nine hundred eighty-five million, seven hundred ninety-nine thousand, nineteen".