161255015265332 has 12 divisors (see below), whose sum is σ = 282202084876740. Its totient is φ = 80625848157696.

The previous prime is 161255015265329. The next prime is 161255015265347. The reversal of 161255015265332 is 233562510552161.

It can be written as a sum of positive squares in 2 ways, for example, as 136551471154576 + 24703544110756 = 11685524^2 + 4970266^2 .

It is a super-2 number, since 2×161255015265332² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 414650093 + ... + 415038804.

It is an arithmetic number, because the mean of its divisors is an integer number (23516840406395).

Almost surely, 2^{161255015265332} is an apocalyptic number.

It is an amenable number.

161255015265332 is a deficient number, since it is larger than the sum of its proper divisors (120947069611408).

161255015265332 is a wasteful number, since it uses less digits than its factorization.

161255015265332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829737490 (or 829737488 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 47.

The spelling of 161255015265332 in words is "one hundred sixty-one trillion, two hundred fifty-five billion, fifteen million, two hundred sixty-five thousand, three hundred thirty-two".