21140432414 has 8 divisors (see below), whose sum is σ = 32183942088. Its totient is φ = 10412451720.

The previous prime is 21140432413. The next prime is 21140432419. The reversal of 21140432414 is 41423404112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140432413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78882077 + ... + 78882344.

It is an arithmetic number, because the mean of its divisors is an integer number (4022992761).

Almost surely, 2^21140432414 is an apocalyptic number.

21140432414 is a deficient number, since it is larger than the sum of its proper divisors (11043509674).

21140432414 is a wasteful number, since it uses less digits than its factorization.

21140432414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157764490.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21140432414 its reverse (41423404112), we get a palindrome (62563836526).

The spelling of 21140432414 in words is "twenty-one billion, one hundred forty million, four hundred thirty-two thousand, four hundred fourteen".