20700354215 has 8 divisors (see below), whose sum is σ = 26301626640. Its totient is φ = 15586148992.

The previous prime is 20700354187. The next prime is 20700354293. The reversal of 20700354215 is 51245300702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20700354215 - 2⁸ = 20700353959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121766705 + ... + 121766874.

It is an arithmetic number, because the mean of its divisors is an integer number (3287703330).

Almost surely, 2^20700354215 is an apocalyptic number.

20700354215 is a deficient number, since it is larger than the sum of its proper divisors (5601272425).

20700354215 is a wasteful number, since it uses less digits than its factorization.

20700354215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243533601.

The product of its (nonzero) digits is 8400, while the sum is 29.

Adding to 20700354215 its reverse (51245300702), we get a palindrome (71945654917).

The spelling of 20700354215 in words is "twenty billion, seven hundred million, three hundred fifty-four thousand, two hundred fifteen".