21332541145 has 8 divisors (see below), whose sum is σ = 25601029704. Its totient is φ = 17064712704.

The previous prime is 21332541119. The next prime is 21332541169. The reversal of 21332541145 is 54114523312.

It can be written as a sum of positive squares in 4 ways, for example, as 8767700496 + 12564840649 = 93636^2 + 112093^2 .

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 21332541145 - 2⁷ = 21332541017 is a prime.

It is a super-2 number, since 2×21332541145² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90904 + ... + 225673.

It is an arithmetic number, because the mean of its divisors is an integer number (3200128713).

Almost surely, 2^21332541145 is an apocalyptic number.

It is an amenable number.

21332541145 is a deficient number, since it is larger than the sum of its proper divisors (4268488559).

21332541145 is a wasteful number, since it uses less digits than its factorization.

21332541145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330059.

The product of its digits is 14400, while the sum is 31.

The spelling of 21332541145 in words is "twenty-one billion, three hundred thirty-two million, five hundred forty-one thousand, one hundred forty-five".