20816551270 has 8 divisors (see below), whose sum is σ = 37469792304. Its totient is φ = 8326620504.

The previous prime is 20816551247. The next prime is 20816551303. The reversal of 20816551270 is 7215561802.

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

It is a super-2 number, since 2×20816551270² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040827554 + ... + 1040827573.

It is an arithmetic number, because the mean of its divisors is an integer number (4683724038).

Almost surely, 2^20816551270 is an apocalyptic number.

20816551270 is a deficient number, since it is larger than the sum of its proper divisors (16653241034).

20816551270 is a wasteful number, since it uses less digits than its factorization.

20816551270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081655134.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 20816551270 in words is "twenty billion, eight hundred sixteen million, five hundred fifty-one thousand, two hundred seventy".