21150411354 has 48 divisors (see below), whose sum is σ = 47903032320. Its totient is φ = 6736335840.

The previous prime is 21150411329. The next prime is 21150411367. The reversal of 21150411354 is 45311405112.

21150411354 is a `hidden beast` number, since 21 + 1 + 504 + 1 + 135 + 4 = 666.

It is a super-2 number, since 2×21150411354² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195817 + ... + 283980.

It is an arithmetic number, because the mean of its divisors is an integer number (997979840).

Almost surely, 2^21150411354 is an apocalyptic number.

21150411354 is an abundant number, since it is smaller than the sum of its proper divisors (26752620966).

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

21150411354 is a wasteful number, since it uses less digits than its factorization.

21150411354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479915 (or 479912 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 21150411354 its reverse (45311405112), we get a palindrome (66461816466).

The spelling of 21150411354 in words is "twenty-one billion, one hundred fifty million, four hundred eleven thousand, three hundred fifty-four".