161452254620 has 24 divisors (see below), whose sum is σ = 339057684000. Its totient is φ = 64579387712.

The previous prime is 161452254619. The next prime is 161452254631. The reversal of 161452254620 is 26452254161.

It is a super-3 number, since 3×161452254620³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236206 + ... + 1360554.

It is an arithmetic number, because the mean of its divisors is an integer number (14127403500).

Almost surely, 2^161452254620 is an apocalyptic number.

161452254620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161452254620 is an abundant number, since it is smaller than the sum of its proper divisors (177605429380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161452254620 is a wasteful number, since it uses less digits than its factorization.

161452254620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189277 (or 189275 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 161452254620 in words is "one hundred sixty-one billion, four hundred fifty-two million, two hundred fifty-four thousand, six hundred twenty".