21163634130154 has 8 divisors (see below), whose sum is σ = 31977169817508. Its totient is φ = 10504577524320.

The previous prime is 21163634130139. The next prime is 21163634130169. The reversal of 21163634130154 is 45103143636112.

It is an interprime number because it is at equal distance from previous prime (21163634130139) and next prime (21163634130169).

It can be written as a sum of positive squares in 2 ways, for example, as 19226707819929 + 1936926310225 = 4384827^2 + 1391735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38619770037 + ... + 38619770584.

Almost surely, 2^{21163634130154} is an apocalyptic number.

21163634130154 is a deficient number, since it is larger than the sum of its proper divisors (10813535687354).

21163634130154 is a wasteful number, since it uses less digits than its factorization.

21163634130154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77239540760.

The product of its (nonzero) digits is 155520, while the sum is 40.

Adding to 21163634130154 its reverse (45103143636112), we get a palindrome (66266777766266).

The spelling of 21163634130154 in words is "twenty-one trillion, one hundred sixty-three billion, six hundred thirty-four million, one hundred thirty thousand, one hundred fifty-four".