10505306487 has 16 divisors (see below), whose sum is σ = 15086445920. Its totient is φ = 6463988352.

The previous prime is 10505306429. The next prime is 10505306507. The reversal of 10505306487 is 78460350501.

It is not a de Polignac number, because 10505306487 - 2¹⁶ = 10505240951 is a prime.

It is a super-2 number, since 2×10505306487² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505306407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480273 + ... + 501669.

It is an arithmetic number, because the mean of its divisors is an integer number (942902870).

Almost surely, 2^10505306487 is an apocalyptic number.

10505306487 is a deficient number, since it is larger than the sum of its proper divisors (4581139433).

10505306487 is a wasteful number, since it uses less digits than its factorization.

10505306487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34002.

The product of its (nonzero) digits is 100800, while the sum is 39.

Adding to 10505306487 its reverse (78460350501), we get a palindrome (88965656988).

The spelling of 10505306487 in words is "ten billion, five hundred five million, three hundred six thousand, four hundred eighty-seven".