161540925167 has 8 divisors (see below), whose sum is σ = 166085208000. Its totient is φ = 157042777504.

The previous prime is 161540925121. The next prime is 161540925209. The reversal of 161540925167 is 761529045161.

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 161540925167 - 2⁸ = 161540924911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161540925467) 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, 11526692 + ... + 11540697.

It is an arithmetic number, because the mean of its divisors is an integer number (20760651000).

Almost surely, 2^161540925167 is an apocalyptic number.

161540925167 is a deficient number, since it is larger than the sum of its proper divisors (4544282833).

161540925167 is a wasteful number, since it uses less digits than its factorization.

161540925167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23067585.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 161540925167 in words is "one hundred sixty-one billion, five hundred forty million, nine hundred twenty-five thousand, one hundred sixty-seven".