21673141270 has 48 divisors (see below), whose sum is σ = 44745009120. Its totient is φ = 7538474240.

The previous prime is 21673141267. The next prime is 21673141289. The reversal of 21673141270 is 7214137612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 361555 + ... + 417214.

It is an arithmetic number, because the mean of its divisors is an integer number (932187690).

Almost surely, 2^21673141270 is an apocalyptic number.

21673141270 is an abundant number, since it is smaller than the sum of its proper divisors (23071867850).

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

21673141270 is a wasteful number, since it uses less digits than its factorization.

21673141270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778821 (or 778810 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

Adding to 21673141270 its reverse (7214137612), we get a palindrome (28887278882).

The spelling of 21673141270 in words is "twenty-one billion, six hundred seventy-three million, one hundred forty-one thousand, two hundred seventy".