15749748005 has 32 divisors (see below), whose sum is σ = 20641461984. Its totient is φ = 11488075776.

The previous prime is 15749747989. The next prime is 15749748061. The reversal of 15749748005 is 50084794751.

It is a happy number.

It is a Cunningham number, because it is equal to 125498²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 3487729249 + 12262018756 = 59057^2 + 110734^2 .

It is a cyclic number.

It is not a de Polignac number, because 15749748005 - 2⁴ = 15749747989 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 722039 + ... + 743531.

It is an arithmetic number, because the mean of its divisors is an integer number (645045687).

Almost surely, 2^15749748005 is an apocalyptic number.

It is an amenable number.

15749748005 is a deficient number, since it is larger than the sum of its proper divisors (4891713979).

15749748005 is a wasteful number, since it uses less digits than its factorization.

15749748005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21785.

The product of its (nonzero) digits is 1411200, while the sum is 50.

It can be divided in two parts, 157497 and 48005, that added together give a palindrome (205502).

The spelling of 15749748005 in words is "fifteen billion, seven hundred forty-nine million, seven hundred forty-eight thousand, five".