10665621154 has 4 divisors (see below), whose sum is σ = 15998431734. Its totient is φ = 5332810576.

The previous prime is 10665621151. The next prime is 10665621167. The reversal of 10665621154 is 45112656601.

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

It can be written as a sum of positive squares in only one way, i.e., 10486784025 + 178837129 = 102405^2 + 13373^2 .

It is a super-2 number, since 2×10665621154² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10665621151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2666405287 + ... + 2666405290.

Almost surely, 2^10665621154 is an apocalyptic number.

10665621154 is a deficient number, since it is larger than the sum of its proper divisors (5332810580).

10665621154 is an equidigital number, since it uses as much as digits as its factorization.

10665621154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332810579.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 10665621154 in words is "ten billion, six hundred sixty-five million, six hundred twenty-one thousand, one hundred fifty-four".