21700350070024 has 32 divisors (see below), whose sum is σ = 42829936624800. Its totient is φ = 10279041592320.

The previous prime is 21700350070019. The next prime is 21700350070039. The reversal of 21700350070024 is 42007005300712.

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, 26040379 + ... + 26860789.

It is an arithmetic number, because the mean of its divisors is an integer number (1338435519525).

Almost surely, 2^{21700350070024} is an apocalyptic number.

It is an amenable number.

21700350070024 is a deficient number, since it is larger than the sum of its proper divisors (21129586554776).

21700350070024 is a wasteful number, since it uses less digits than its factorization.

21700350070024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994453 (or 994449 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

Adding to 21700350070024 its reverse (42007005300712), we get a palindrome (63707355370736).

The spelling of 21700350070024 in words is "twenty-one trillion, seven hundred billion, three hundred fifty million, seventy thousand, twenty-four".