161097376387 has 4 divisors (see below), whose sum is σ = 162523017000. Its totient is φ = 159671735776.

The previous prime is 161097376381. The next prime is 161097376393. The reversal of 161097376387 is 783673790161.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (161097376381) and next prime (161097376393).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161097376387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161097376381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712820137 + ... + 712820362.

It is an arithmetic number, because the mean of its divisors is an integer number (40630754250).

Almost surely, 2^161097376387 is an apocalyptic number.

161097376387 is a deficient number, since it is larger than the sum of its proper divisors (1425640613).

161097376387 is a wasteful number, since it uses less digits than its factorization.

161097376387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425640612.

The product of its (nonzero) digits is 8001504, while the sum is 58.

The spelling of 161097376387 in words is "one hundred sixty-one billion, ninety-seven million, three hundred seventy-six thousand, three hundred eighty-seven".