21337527354 has 128 divisors (see below), whose sum is σ = 52634050560. Its totient is φ = 5677689600.

The previous prime is 21337527329. The next prime is 21337527361. The reversal of 21337527354 is 45372573312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1562484 + ... + 1576080.

It is an arithmetic number, because the mean of its divisors is an integer number (411203520).

Almost surely, 2^21337527354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21337527354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26317025280).

21337527354 is an abundant number, since it is smaller than the sum of its proper divisors (31296523206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21337527354 is a wasteful number, since it uses less digits than its factorization.

21337527354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13716.

The product of its digits is 529200, while the sum is 42.

The spelling of 21337527354 in words is "twenty-one billion, three hundred thirty-seven million, five hundred twenty-seven thousand, three hundred fifty-four".