103399194971521 has 8 divisors (see below), whose sum is σ = 104819112912384. Its totient is φ = 101979371371680.

The previous prime is 103399194971519. The next prime is 103399194971531. The reversal of 103399194971521 is 125179491993301.

It is a happy number.

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 103399194971521 - 2¹ = 103399194971519 is a prime.

It is a super-2 number, since 2×103399194971521² (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 (103399194971531) 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 7 ways as a sum of consecutive naturals, for example, 21376765 + ... + 25763626.

It is an arithmetic number, because the mean of its divisors is an integer number (13102389114048).

Almost surely, 2^{103399194971521} is an apocalyptic number.

It is an amenable number.

103399194971521 is a deficient number, since it is larger than the sum of its proper divisors (1419917940863).

103399194971521 is an equidigital number, since it uses as much as digits as its factorization.

103399194971521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47170511.

The product of its (nonzero) digits is 16533720, while the sum is 64.

The spelling of 103399194971521 in words is "one hundred three trillion, three hundred ninety-nine billion, one hundred ninety-four million, nine hundred seventy-one thousand, five hundred twenty-one".