10642046621 has 2 divisors, whose sum is σ = 10642046622. Its totient is φ = 10642046620.

The previous prime is 10642046593. The next prime is 10642046627. The reversal of 10642046621 is 12664024601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7954142596 + 2687904025 = 89186^2 + 51845^2 .

It is a cyclic number.

It is not a de Polignac number, because 10642046621 - 2¹⁴ = 10642030237 is a prime.

It is a super-2 number, since 2×10642046621² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10642046627) 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, 5321023310 + 5321023311.

It is an arithmetic number, because the mean of its divisors is an integer number (5321023311).

Almost surely, 2^10642046621 is an apocalyptic number.

It is an amenable number.

10642046621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10642046621 is an equidigital number, since it uses as much as digits as its factorization.

10642046621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 10642046621 in words is "ten billion, six hundred forty-two million, forty-six thousand, six hundred twenty-one".