5663721747506 has 16 divisors (see below), whose sum is σ = 8810021640600. Its totient is φ = 2727525376128.

The previous prime is 5663721747479. The next prime is 5663721747511. The reversal of 5663721747506 is 6057471273665.

It can be written as a sum of positive squares in 4 ways, for example, as 5653909062025 + 9812685481 = 2377795^2 + 99059^2 .

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, 119353265 + ... + 119400708.

Almost surely, 2^{5663721747506} is an apocalyptic number.

5663721747506 is a deficient number, since it is larger than the sum of its proper divisors (3146299893094).

5663721747506 is a wasteful number, since it uses less digits than its factorization.

5663721747506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238754413.

The product of its (nonzero) digits is 44452800, while the sum is 59.

The spelling of 5663721747506 in words is "five trillion, six hundred sixty-three billion, seven hundred twenty-one million, seven hundred forty-seven thousand, five hundred six".