10666656501531 has 32 divisors (see below), whose sum is σ = 15275705670720. Its totient is φ = 6597041946624.

The previous prime is 10666656501469. The next prime is 10666656501551. The reversal of 10666656501531 is 13510565666601.

10666656501531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10666656501531 - 2¹⁵ = 10666656468763 is a prime.

It is a super-2 number, since 2×10666656501531² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (10666656501551) 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, 3898120 + ... + 6043893.

It is an arithmetic number, because the mean of its divisors is an integer number (477365802210).

Almost surely, 2^{10666656501531} is an apocalyptic number.

10666656501531 is a deficient number, since it is larger than the sum of its proper divisors (4609049169189).

10666656501531 is a wasteful number, since it uses less digits than its factorization.

10666656501531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9942335.

The product of its (nonzero) digits is 2916000, while the sum is 51.

The spelling of 10666656501531 in words is "ten trillion, six hundred sixty-six billion, six hundred fifty-six million, five hundred one thousand, five hundred thirty-one".