10687520461 has 4 divisors (see below), whose sum is σ = 10707276124. Its totient is φ = 10667764800.

The previous prime is 10687520449. The next prime is 10687520479. The reversal of 10687520461 is 16402578601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6705153225 + 3982367236 = 81885^2 + 63106^2 .

It is a cyclic number.

It is not a de Polignac number, because 10687520461 - 2⁵ = 10687520429 is a prime.

It is a super-2 number, since 2×10687520461² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10687520161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9877020 + ... + 9878101.

It is an arithmetic number, because the mean of its divisors is an integer number (2676819031).

Almost surely, 2^10687520461 is an apocalyptic number.

It is an amenable number.

10687520461 is a deficient number, since it is larger than the sum of its proper divisors (19755663).

10687520461 is an equidigital number, since it uses as much as digits as its factorization.

10687520461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19755662.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 10687520461 in words is "ten billion, six hundred eighty-seven million, five hundred twenty thousand, four hundred sixty-one".