10505610491 has 8 divisors (see below), whose sum is σ = 10852752768. Its totient is φ = 10158984000.

The previous prime is 10505610457. The next prime is 10505610509. The reversal of 10505610491 is 19401650501.

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 10505610491 - 2²² = 10501416187 is a prime.

It is a super-2 number, since 2×10505610491² (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 (10505610391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87320 + ... + 169221.

It is an arithmetic number, because the mean of its divisors is an integer number (1356594096).

Almost surely, 2^10505610491 is an apocalyptic number.

10505610491 is a deficient number, since it is larger than the sum of its proper divisors (347142277).

10505610491 is a wasteful number, since it uses less digits than its factorization.

10505610491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257893.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 10505610491 in words is "ten billion, five hundred five million, six hundred ten thousand, four hundred ninety-one".