161367236536 has 16 divisors (see below), whose sum is σ = 330069347640. Its totient is φ = 73348743840.

The previous prime is 161367236491. The next prime is 161367236557. The reversal of 161367236536 is 635632763161.

It is a self number, because there is not a number n which added to its sum of digits gives 161367236536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916859211 + ... + 916859386.

Almost surely, 2^161367236536 is an apocalyptic number.

It is an amenable number.

161367236536 is an abundant number, since it is smaller than the sum of its proper divisors (168702111104).

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

161367236536 is a wasteful number, since it uses less digits than its factorization.

161367236536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833718614 (or 1833718610 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 49.

Adding to 161367236536 its reverse (635632763161), we get a palindrome (796999999697).

The spelling of 161367236536 in words is "one hundred sixty-one billion, three hundred sixty-seven million, two hundred thirty-six thousand, five hundred thirty-six".