21400141514 has 4 divisors (see below), whose sum is σ = 32100212274. Its totient is φ = 10700070756.

The previous prime is 21400141513. The next prime is 21400141519. The reversal of 21400141514 is 41514100412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10736068225 + 10664073289 = 103615^2 + 103267^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21400141514.

It is not an unprimeable number, because it can be changed into a prime (21400141513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5350035377 + ... + 5350035380.

Almost surely, 2^21400141514 is an apocalyptic number.

21400141514 is a deficient number, since it is larger than the sum of its proper divisors (10700070760).

21400141514 is a wasteful number, since it uses less digits than its factorization.

21400141514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700070759.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 21400141514 its reverse (41514100412), we get a palindrome (62914241926).

The spelling of 21400141514 in words is "twenty-one billion, four hundred million, one hundred forty-one thousand, five hundred fourteen".