10106421649 has 4 divisors (see below), whose sum is σ = 10352919780. Its totient is φ = 9859923520.

The previous prime is 10106421643. The next prime is 10106421659. The reversal of 10106421649 is 94612460101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94612460101 = 283 ⋅334319647.

It can be written as a sum of positive squares in 2 ways, for example, as 5723981649 + 4382440000 = 75657^2 + 66200^2 .

It is a cyclic number.

It is not a de Polignac number, because 10106421649 - 2³ = 10106421641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10106421641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123249004 + ... + 123249085.

It is an arithmetic number, because the mean of its divisors is an integer number (2588229945).

Almost surely, 2^10106421649 is an apocalyptic number.

It is an amenable number.

10106421649 is a deficient number, since it is larger than the sum of its proper divisors (246498131).

10106421649 is an equidigital number, since it uses as much as digits as its factorization.

10106421649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246498130.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 10106421649 in words is "ten billion, one hundred six million, four hundred twenty-one thousand, six hundred forty-nine".