161245555713 has 80 divisors (see below), whose sum is σ = 281356130880. Its totient is φ = 90941875200.

The previous prime is 161245555687. The next prime is 161245555729. The reversal of 161245555713 is 317555542161.

161245555713 is a `hidden beast` number, since 1 + 6 + 1 + 24 + 5 + 55 + 571 + 3 = 666.

161245555713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161245555713 - 2²⁴ = 161228778497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161245555763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1288278 + ... + 1407888.

It is an arithmetic number, because the mean of its divisors is an integer number (3516951636).

Almost surely, 2^161245555713 is an apocalyptic number.

It is an amenable number.

161245555713 is a deficient number, since it is larger than the sum of its proper divisors (120110575167).

161245555713 is a wasteful number, since it uses less digits than its factorization.

161245555713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119740 (or 119731 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The spelling of 161245555713 in words is "one hundred sixty-one billion, two hundred forty-five million, five hundred fifty-five thousand, seven hundred thirteen".