15500245105 has 8 divisors (see below), whose sum is σ = 18610028712. Its totient is φ = 12393706368.

The previous prime is 15500245097. The next prime is 15500245129. The reversal of 15500245105 is 50154200551.

It can be written as a sum of positive squares in 4 ways, for example, as 6873736464 + 8626508641 = 82908^2 + 92879^2 .

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 15500245105 - 2³ = 15500245097 is a prime.

It is a super-2 number, since 2×15500245105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 800694 + ... + 819823.

It is an arithmetic number, because the mean of its divisors is an integer number (2326253589).

Almost surely, 2^15500245105 is an apocalyptic number.

It is an amenable number.

15500245105 is a deficient number, since it is larger than the sum of its proper divisors (3109783607).

15500245105 is a wasteful number, since it uses less digits than its factorization.

15500245105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622435.

The product of its (nonzero) digits is 5000, while the sum is 28.

Adding to 15500245105 its reverse (50154200551), we get a palindrome (65654445656).

The spelling of 15500245105 in words is "fifteen billion, five hundred million, two hundred forty-five thousand, one hundred five".