10432621661 has 16 divisors (see below), whose sum is σ = 13029739008. Its totient is φ = 8115044400.

The previous prime is 10432621621. The next prime is 10432621679. The reversal of 10432621661 is 16612623401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10432621661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10432621621) 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 in 15 ways as a sum of consecutive naturals, for example, 74675 + ... + 162608.

It is an arithmetic number, because the mean of its divisors is an integer number (814358688).

Almost surely, 2^10432621661 is an apocalyptic number.

10432621661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10432621661 is a deficient number, since it is larger than the sum of its proper divisors (2597117347).

10432621661 is a wasteful number, since it uses less digits than its factorization.

10432621661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237872.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 10432621661 in words is "ten billion, four hundred thirty-two million, six hundred twenty-one thousand, six hundred sixty-one".