161452246205772 has 24 divisors (see below), whose sum is σ = 418579897570800. Its totient is φ = 53817415401888.

The previous prime is 161452246205759. The next prime is 161452246205773. The reversal of 161452246205772 is 277502642254161.

161452246205772 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 5 + 2 + 2 + 4 + 62 + 0 + 577 + 2 = 666.

It is a super-2 number, since 2×161452246205772² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (161452246205773) 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, 747464102697 + ... + 747464102912.

It is an arithmetic number, because the mean of its divisors is an integer number (17440829065450).

Almost surely, 2^{161452246205772} is an apocalyptic number.

161452246205772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161452246205772 is an abundant number, since it is smaller than the sum of its proper divisors (257127651365028).

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

161452246205772 is a wasteful number, since it uses less digits than its factorization.

161452246205772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494928205622 (or 1494928205614 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 54.

The spelling of 161452246205772 in words is "one hundred sixty-one trillion, four hundred fifty-two billion, two hundred forty-six million, two hundred five thousand, seven hundred seventy-two".