361616625613 has 4 divisors (see below), whose sum is σ = 363919916380. Its totient is φ = 359313334848.

The previous prime is 361616625599. The next prime is 361616625637. The reversal of 361616625613 is 316526616163.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212186445769 + 149430179844 = 460637^2 + 386562^2 .

It is a cyclic number.

It is not a de Polignac number, because 361616625613 - 2⁹ = 361616625101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361616625913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151645148 + ... + 1151645461.

It is an arithmetic number, because the mean of its divisors is an integer number (90979979095).

Almost surely, 2^361616625613 is an apocalyptic number.

It is an amenable number.

361616625613 is a deficient number, since it is larger than the sum of its proper divisors (2303290767).

361616625613 is a wasteful number, since it uses less digits than its factorization.

361616625613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303290766.

The product of its digits is 699840, while the sum is 46.

The spelling of 361616625613 in words is "three hundred sixty-one billion, six hundred sixteen million, six hundred twenty-five thousand, six hundred thirteen".