21374332241630 has 16 divisors (see below), whose sum is σ = 38473971966144. Its totient is φ = 8549694245280.

The previous prime is 21374332241629. The next prime is 21374332241653. The reversal of 21374332241630 is 3614223347312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2453057 + ... + 6983276.

It is an arithmetic number, because the mean of its divisors is an integer number (2404623247884).

Almost surely, 2^{21374332241630} is an apocalyptic number.

21374332241630 is a deficient number, since it is larger than the sum of its proper divisors (17099639724514).

21374332241630 is a wasteful number, since it uses less digits than its factorization.

21374332241630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9662851.

The product of its (nonzero) digits is 435456, while the sum is 41.

Adding to 21374332241630 its reverse (3614223347312), we get a palindrome (24988555588942).

The spelling of 21374332241630 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred thirty-two million, two hundred forty-one thousand, six hundred thirty".