161513910039 has 8 divisors (see below), whose sum is σ = 215681671152. Its totient is φ = 107511044480.

The previous prime is 161513910031. The next prime is 161513910043. The reversal of 161513910039 is 930019315161.

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 161513910039 - 2³ = 161513910031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161513909979 and 161513910006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161513910031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41221602 + ... + 41225519.

It is an arithmetic number, because the mean of its divisors is an integer number (26960208894).

Almost surely, 2^161513910039 is an apocalyptic number.

161513910039 is a deficient number, since it is larger than the sum of its proper divisors (54167761113).

161513910039 is an equidigital number, since it uses as much as digits as its factorization.

161513910039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82447777.

The product of its (nonzero) digits is 21870, while the sum is 39.

The spelling of 161513910039 in words is "one hundred sixty-one billion, five hundred thirteen million, nine hundred ten thousand, thirty-nine".