21406010147 has 24 divisors (see below), whose sum is σ = 22940467200. Its totient is φ = 19969005168.

The previous prime is 21406010117. The next prime is 21406010161. The reversal of 21406010147 is 74101060412.

It is not a de Polignac number, because 21406010147 - 2¹⁸ = 21405748003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21406010117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6371054 + ... + 6374412.

It is an arithmetic number, because the mean of its divisors is an integer number (955852800).

Almost surely, 2^21406010147 is an apocalyptic number.

21406010147 is a deficient number, since it is larger than the sum of its proper divisors (1534457053).

21406010147 is a wasteful number, since it uses less digits than its factorization.

21406010147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663 (or 3644 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 21406010147 its reverse (74101060412), we get a palindrome (95507070559).

The spelling of 21406010147 in words is "twenty-one billion, four hundred six million, ten thousand, one hundred forty-seven".