161606051156553 has 8 divisors (see below), whose sum is σ = 216163152559968. Its totient is φ = 107393158595424.

The previous prime is 161606051156551. The next prime is 161606051156587. The reversal of 161606051156553 is 355651150606161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161606051156553 - 2¹ = 161606051156551 is a prime.

It is a super-2 number, since 2×161606051156553² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161606051156496 and 161606051156505.

It is not an unprimeable number, because it can be changed into a prime (161606051156551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86052209475 + ... + 86052211352.

It is an arithmetic number, because the mean of its divisors is an integer number (27020394069996).

Almost surely, 2^{161606051156553} is an apocalyptic number.

It is an amenable number.

161606051156553 is a deficient number, since it is larger than the sum of its proper divisors (54557101403415).

161606051156553 is a wasteful number, since it uses less digits than its factorization.

161606051156553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172104421143.

The product of its (nonzero) digits is 2430000, while the sum is 51.

The spelling of 161606051156553 in words is "one hundred sixty-one trillion, six hundred six billion, fifty-one million, one hundred fifty-six thousand, five hundred fifty-three".