2856615509420 has 24 divisors (see below), whose sum is σ = 5998993010304. Its totient is φ = 1142627072256.

The previous prime is 2856615509401. The next prime is 2856615509519. The reversal of 2856615509420 is 249055166582.

It is a super-2 number, since 2×2856615509420² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60869 + ... + 2391011.

It is an arithmetic number, because the mean of its divisors is an integer number (249958042096).

Almost surely, 2^{2856615509420} is an apocalyptic number.

2856615509420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2856615509420 is an abundant number, since it is smaller than the sum of its proper divisors (3142377500884).

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

2856615509420 is a wasteful number, since it uses less digits than its factorization.

2856615509420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391449 (or 2391447 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 2856615509420 in words is "two trillion, eight hundred fifty-six billion, six hundred fifteen million, five hundred nine thousand, four hundred twenty".