10487071561 has 4 divisors (see below), whose sum is σ = 10825364224. Its totient is φ = 10148778900.

The previous prime is 10487071549. The next prime is 10487071583. The reversal of 10487071561 is 16517078401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16517078401 = 1297 ⋅12734833.

It is a cyclic number.

It is not a de Polignac number, because 10487071561 - 2⁷ = 10487071433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10487071501) 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, 169146285 + ... + 169146346.

It is an arithmetic number, because the mean of its divisors is an integer number (2706341056).

Almost surely, 2^10487071561 is an apocalyptic number.

It is an amenable number.

10487071561 is a deficient number, since it is larger than the sum of its proper divisors (338292663).

10487071561 is an equidigital number, since it uses as much as digits as its factorization.

10487071561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338292662.

The product of its (nonzero) digits is 47040, while the sum is 40.

The spelling of 10487071561 in words is "ten billion, four hundred eighty-seven million, seventy-one thousand, five hundred sixty-one".