5627161642 has 4 divisors (see below), whose sum is σ = 8440742466. Its totient is φ = 2813580820.

The previous prime is 5627161627. The next prime is 5627161649. The reversal of 5627161642 is 2461617265.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2461617265 = 5 ⋅492323453.

It can be written as a sum of positive squares in only one way, i.e., 5520638601 + 106523041 = 74301^2 + 10321^2 .

It is a super-2 number, since 2×5627161642² = 63329896290392272328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 5627161595 and 5627161604.

It is not an unprimeable number, because it can be changed into a prime (5627161649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1406790409 + ... + 1406790412.

Almost surely, 2^5627161642 is an apocalyptic number.

5627161642 is a deficient number, since it is larger than the sum of its proper divisors (2813580824).

5627161642 is a wasteful number, since it uses less digits than its factorization.

5627161642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813580823.

The product of its digits is 120960, while the sum is 40.

The square root of 5627161642 is about 75014.4095624301. The cubic root of 5627161642 is about 1778.6744372898.

The spelling of 5627161642 in words is "five billion, six hundred twenty-seven million, one hundred sixty-one thousand, six hundred forty-two".