21126152467 has 8 divisors (see below), whose sum is σ = 25564419936. Its totient is φ = 17042946432.

The previous prime is 21126152447. The next prime is 21126152471. The reversal of 21126152467 is 76425162112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21126152467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21126152407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88765228 + ... + 88765465.

It is an arithmetic number, because the mean of its divisors is an integer number (3195552492).

Almost surely, 2^21126152467 is an apocalyptic number.

21126152467 is a deficient number, since it is larger than the sum of its proper divisors (4438267469).

21126152467 is a wasteful number, since it uses less digits than its factorization.

21126152467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177530717.

The product of its digits is 40320, while the sum is 37.

The spelling of 21126152467 in words is "twenty-one billion, one hundred twenty-six million, one hundred fifty-two thousand, four hundred sixty-seven".