161587062656099 has 32 divisors (see below), whose sum is σ = 164695770624000. Its totient is φ = 158514896073600.

The previous prime is 161587062656081. The next prime is 161587062656161. The reversal of 161587062656099 is 990656260785161.

It is a Cunningham number, because it is equal to 12711690²-1.

It is a cyclic number.

It is not a de Polignac number, because 161587062656099 - 2³² = 161582767688803 is a prime.

It is a super-2 number, since 2×161587062656099² (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 (161587062656059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8402416814 + ... + 8402436044.

It is an arithmetic number, because the mean of its divisors is an integer number (5146742832000).

Almost surely, 2^{161587062656099} is an apocalyptic number.

161587062656099 is a deficient number, since it is larger than the sum of its proper divisors (3108707967901).

161587062656099 is a wasteful number, since it uses less digits than its factorization.

161587062656099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20979.

The product of its (nonzero) digits is 293932800, while the sum is 71.

The spelling of 161587062656099 in words is "one hundred sixty-one trillion, five hundred eighty-seven billion, sixty-two million, six hundred fifty-six thousand, ninety-nine".