10611661305 has 32 divisors (see below), whose sum is σ = 20030128128. Its totient is φ = 4694558400.

The previous prime is 10611661301. The next prime is 10611661331. The reversal of 10611661305 is 50316611601.

It is not a de Polignac number, because 10611661305 - 2² = 10611661301 is a prime.

It is a super-2 number, since 2×10611661305² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10611661301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1626801 + ... + 1633310.

It is an arithmetic number, because the mean of its divisors is an integer number (625941504).

Almost surely, 2^10611661305 is an apocalyptic number.

10611661305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10611661305 is a deficient number, since it is larger than the sum of its proper divisors (9418466823).

10611661305 is a wasteful number, since it uses less digits than its factorization.

10611661305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260157.

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 10611661305 in words is "ten billion, six hundred eleven million, six hundred sixty-one thousand, three hundred five".