21323139151 has 8 divisors (see below), whose sum is σ = 23102499024. Its totient is φ = 19602119040.

The previous prime is 21323139127. The next prime is 21323139157. The reversal of 21323139151 is 15193132312.

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

It is a cyclic number.

It is not a de Polignac number, because 21323139151 - 2⁵ = 21323139119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323139157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14584180 + ... + 14585641.

It is an arithmetic number, because the mean of its divisors is an integer number (2887812378).

Almost surely, 2^21323139151 is an apocalyptic number.

21323139151 is a deficient number, since it is larger than the sum of its proper divisors (1779359873).

21323139151 is a wasteful number, since it uses less digits than its factorization.

21323139151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29169881.

The product of its digits is 4860, while the sum is 31.

The spelling of 21323139151 in words is "twenty-one billion, three hundred twenty-three million, one hundred thirty-nine thousand, one hundred fifty-one".