361365081640 has 16 divisors (see below), whose sum is σ = 813071433780. Its totient is φ = 144546032640.

The previous prime is 361365081521. The next prime is 361365081659. The reversal of 361365081640 is 46180563163.

It can be written as a sum of positive squares in 2 ways, for example, as 317291117796 + 44073963844 = 563286^2 + 209938^2 .

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, 4517063481 + ... + 4517063560.

Almost surely, 2^361365081640 is an apocalyptic number.

It is an amenable number.

361365081640 is an abundant number, since it is smaller than the sum of its proper divisors (451706352140).

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

361365081640 is a wasteful number, since it uses less digits than its factorization.

361365081640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9034127052 (or 9034127048 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 361365081640 in words is "three hundred sixty-one billion, three hundred sixty-five million, eighty-one thousand, six hundred forty".