10501505491 has 4 divisors (see below), whose sum is σ = 10863626400. Its totient is φ = 10139384584.

The previous prime is 10501505467. The next prime is 10501505503. The reversal of 10501505491 is 19450510501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10501505491 - 2⁵ = 10501505459 is a prime.

It is a super-2 number, since 2×10501505491² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10501505411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181060411 + ... + 181060468.

It is an arithmetic number, because the mean of its divisors is an integer number (2715906600).

Almost surely, 2^10501505491 is an apocalyptic number.

10501505491 is a deficient number, since it is larger than the sum of its proper divisors (362120909).

10501505491 is an equidigital number, since it uses as much as digits as its factorization.

10501505491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362120908.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 10501505491 in words is "ten billion, five hundred one million, five hundred five thousand, four hundred ninety-one".