21541354150 has 24 divisors (see below), whose sum is σ = 40088621664. Its totient is φ = 8611874400.

The previous prime is 21541354147. The next prime is 21541354187. The reversal of 21541354150 is 5145314512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22702 + ... + 208801.

It is an arithmetic number, because the mean of its divisors is an integer number (1670359236).

Almost surely, 2^21541354150 is an apocalyptic number.

21541354150 is a deficient number, since it is larger than the sum of its proper divisors (18547267514).

21541354150 is a wasteful number, since it uses less digits than its factorization.

21541354150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233376 (or 233371 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 21541354150 its reverse (5145314512), we get a palindrome (26686668662).

The spelling of 21541354150 in words is "twenty-one billion, five hundred forty-one million, three hundred fifty-four thousand, one hundred fifty".