10089956621 has 2 divisors, whose sum is σ = 10089956622. Its totient is φ = 10089956620.

The previous prime is 10089956599. The next prime is 10089956627. The reversal of 10089956621 is 12665998001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8115487396 + 1974469225 = 90086^2 + 44435^2 .

It is a cyclic number.

It is not a de Polignac number, because 10089956621 - 2¹⁸ = 10089694477 is a prime.

It is a super-2 number, since 2×10089956621² (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 (10089956627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5044978310 + 5044978311.

It is an arithmetic number, because the mean of its divisors is an integer number (5044978311).

Almost surely, 2^10089956621 is an apocalyptic number.

It is an amenable number.

10089956621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10089956621 is an equidigital number, since it uses as much as digits as its factorization.

10089956621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 10089956621 in words is "ten billion, eighty-nine million, nine hundred fifty-six thousand, six hundred twenty-one".