161606601510007 has 4 divisors (see below), whose sum is σ = 162426939588936. Its totient is φ = 160786263431080.

The previous prime is 161606601510001. The next prime is 161606601510073. The reversal of 161606601510007 is 700015106606161.

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

It is a cyclic number.

It is not a de Polignac number, because 161606601510007 - 2⁷ = 161606601509879 is a prime.

It is a super-3 number, since 3×161606601510007³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606601510001) 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, 410169039169 + ... + 410169039562.

It is an arithmetic number, because the mean of its divisors is an integer number (40606734897234).

Almost surely, 2^{161606601510007} is an apocalyptic number.

161606601510007 is a deficient number, since it is larger than the sum of its proper divisors (820338078929).

161606601510007 is an equidigital number, since it uses as much as digits as its factorization.

161606601510007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820338078928.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 161606601510007 in words is "one hundred sixty-one trillion, six hundred six billion, six hundred one million, five hundred ten thousand, seven".