5061561644 has 24 divisors (see below), whose sum is σ = 8910815760. Its totient is φ = 2515636224.

The previous prime is 5061561619. The next prime is 5061561667. The reversal of 5061561644 is 4461651605.

It is a happy number.

It is a super-3 number, since 3×5061561644³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5061561598 and 5061561607.

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, 1526132 + ... + 1529444.

It is an arithmetic number, because the mean of its divisors is an integer number (371283990).

Almost surely, 2^5061561644 is an apocalyptic number.

It is an amenable number.

5061561644 is a deficient number, since it is larger than the sum of its proper divisors (3849254116).

5061561644 is a wasteful number, since it uses less digits than its factorization.

5061561644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489 (or 5487 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 5061561644 is about 71144.6529543858. The cubic root of 5061561644 is about 1716.9652684373.

The spelling of 5061561644 in words is "five billion, sixty-one million, five hundred sixty-one thousand, six hundred forty-four".