101005189994 has 8 divisors (see below), whose sum is σ = 156732191460. Its totient is φ = 48761126176.

The previous prime is 101005189991. The next prime is 101005190003. The reversal of 101005189994 is 499981500101.

It can be written as a sum of positive squares in 2 ways, for example, as 101005102969 + 87025 = 317813^2 + 295^2 .

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

It is not an unprimeable number, because it can be changed into a prime (101005189991) 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, 870734339 + ... + 870734454.

Almost surely, 2^101005189994 is an apocalyptic number.

101005189994 is a deficient number, since it is larger than the sum of its proper divisors (55727001466).

101005189994 is a wasteful number, since it uses less digits than its factorization.

101005189994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741468824.

The product of its (nonzero) digits is 116640, while the sum is 47.

The spelling of 101005189994 in words is "one hundred one billion, five million, one hundred eighty-nine thousand, nine hundred ninety-four".