10661552326531 has 4 divisors (see below), whose sum is σ = 10707310062072. Its totient is φ = 10615794590992.

The previous prime is 10661552326507. The next prime is 10661552326547. The reversal of 10661552326531 is 13562325516601.

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

It is a cyclic number.

It is not a de Polignac number, because 10661552326531 - 2³⁵ = 10627192588163 is a prime.

It is a super-2 number, since 2×10661552326531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10661552326231) 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, 22878867421 + ... + 22878867886.

It is an arithmetic number, because the mean of its divisors is an integer number (2676827515518).

Almost surely, 2^{10661552326531} is an apocalyptic number.

10661552326531 is a deficient number, since it is larger than the sum of its proper divisors (45757735541).

10661552326531 is an equidigital number, since it uses as much as digits as its factorization.

10661552326531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45757735540.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 10661552326531 in words is "ten trillion, six hundred sixty-one billion, five hundred fifty-two million, three hundred twenty-six thousand, five hundred thirty-one".