161606106651535 has 48 divisors (see below), whose sum is σ = 243134897594400. Its totient is φ = 102210087216384.

The previous prime is 161606106651467. The next prime is 161606106651541. The reversal of 161606106651535 is 535156601606161.

It is not a de Polignac number, because 161606106651535 - 2¹⁵ = 161606106618767 is a prime.

It is a super-2 number, since 2×161606106651535² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16140900 + ... + 24160729.

It is an arithmetic number, because the mean of its divisors is an integer number (5065310366550).

Almost surely, 2^{161606106651535} is an apocalyptic number.

161606106651535 is a deficient number, since it is larger than the sum of its proper divisors (81528790942865).

161606106651535 is a wasteful number, since it uses less digits than its factorization.

161606106651535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40302920 (or 40302913 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 52.

The spelling of 161606106651535 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred six million, six hundred fifty-one thousand, five hundred thirty-five".