21541431114 has 40 divisors (see below), whose sum is σ = 55164302688. Its totient is φ = 6154694280.

The previous prime is 21541431113. The next prime is 21541431143. The reversal of 21541431114 is 41113414512.

It is a happy number.

21541431114 is a `hidden beast` number, since 2 + 1 + 541 + 4 + 3 + 1 + 114 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21541431113) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9496852 + ... + 9499119.

Almost surely, 2^21541431114 is an apocalyptic number.

21541431114 is an abundant number, since it is smaller than the sum of its proper divisors (33622871574).

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

21541431114 is a wasteful number, since it uses less digits than its factorization.

21541431114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18995992 (or 18995983 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

Adding to 21541431114 its reverse (41113414512), we get a palindrome (62654845626).

The spelling of 21541431114 in words is "twenty-one billion, five hundred forty-one million, four hundred thirty-one thousand, one hundred fourteen".