5678161582061 has 4 divisors (see below), whose sum is σ = 5678172812124. Its totient is φ = 5678150352000.

The previous prime is 5678161582021. The next prime is 5678161582069. The reversal of 5678161582061 is 1602851618765.

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 2513711949961 + 3164449632100 = 1585469^2 + 1778890^2 .

It is a cyclic number.

It is not a de Polignac number, because 5678161582061 - 2¹⁸ = 5678161319917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5678161581988 and 5678161582006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5678161582069) 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, 4818980 + ... + 5880381.

It is an arithmetic number, because the mean of its divisors is an integer number (1419543203031).

Almost surely, 2^{5678161582061} is an apocalyptic number.

It is an amenable number.

5678161582061 is a deficient number, since it is larger than the sum of its proper divisors (11230063).

5678161582061 is a wasteful number, since it uses less digits than its factorization.

5678161582061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11230062.

The product of its (nonzero) digits is 4838400, while the sum is 56.

The spelling of 5678161582061 in words is "five trillion, six hundred seventy-eight billion, one hundred sixty-one million, five hundred eighty-two thousand, sixty-one".