10151666621 has 2 divisors, whose sum is σ = 10151666622. Its totient is φ = 10151666620.

The previous prime is 10151666597. The next prime is 10151666669. The reversal of 10151666621 is 12666615101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9445701721 + 705964900 = 97189^2 + 26570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10151666621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10151660621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5075833310 + 5075833311.

It is an arithmetic number, because the mean of its divisors is an integer number (5075833311).

Almost surely, 2^10151666621 is an apocalyptic number.

It is an amenable number.

10151666621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10151666621 is an equidigital number, since it uses as much as digits as its factorization.

10151666621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 10151666621 in words is "ten billion, one hundred fifty-one million, six hundred sixty-six thousand, six hundred twenty-one".