10661560051 has 4 divisors (see below), whose sum is σ = 10909503352. Its totient is φ = 10413616752.

The previous prime is 10661560037. The next prime is 10661560109. The reversal of 10661560051 is 15006516601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15006516601 = 59 ⋅254347739.

It is a cyclic number.

It is not a de Polignac number, because 10661560051 - 2⁹ = 10661559539 is a prime.

It is a super-2 number, since 2×10661560051² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10661559995 and 10661560022.

It is not an unprimeable number, because it can be changed into a prime (10661560451) 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, 123971586 + ... + 123971671.

It is an arithmetic number, because the mean of its divisors is an integer number (2727375838).

Almost surely, 2^10661560051 is an apocalyptic number.

10661560051 is a deficient number, since it is larger than the sum of its proper divisors (247943301).

10661560051 is an equidigital number, since it uses as much as digits as its factorization.

10661560051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247943300.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 10661560051 in words is "ten billion, six hundred sixty-one million, five hundred sixty thousand, fifty-one".