5661621635 has 8 divisors (see below), whose sum is σ = 6794809440. Its totient is φ = 4528721664.

The previous prime is 5661621619. The next prime is 5661621671. The reversal of 5661621635 is 5361261665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5661621635 - 2⁴ = 5661621619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5661621592 and 5661621601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26015 + ... + 109544.

It is an arithmetic number, because the mean of its divisors is an integer number (849351180).

Almost surely, 2^5661621635 is an apocalyptic number.

5661621635 is a deficient number, since it is larger than the sum of its proper divisors (1133187805).

5661621635 is a wasteful number, since it uses less digits than its factorization.

5661621635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143917.

The product of its digits is 194400, while the sum is 41.

The square root of 5661621635 is about 75243.7481456101. The cubic root of 5661621635 is about 1782.2978398460.

The spelling of 5661621635 in words is "five billion, six hundred sixty-one million, six hundred twenty-one thousand, six hundred thirty-five".