6412851220 has 24 divisors (see below), whose sum is σ = 13473546408. Its totient is φ = 2563891200.

The previous prime is 6412851169. The next prime is 6412851233. The reversal of 6412851220 is 221582146.

It can be written as a sum of positive squares in 4 ways, for example, as 767733264 + 5645117956 = 27708^2 + 75134^2 .

It is a super-2 number, since 2×6412851220² = 82249321539710976800, which 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 7 ways as a sum of consecutive naturals, for example, 35421 + ... + 118660.

It is an arithmetic number, because the mean of its divisors is an integer number (561397767).

Almost surely, 2^6412851220 is an apocalyptic number.

It is an amenable number.

6412851220 is an abundant number, since it is smaller than the sum of its proper divisors (7060695188).

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

6412851220 is a wasteful number, since it uses less digits than its factorization.

6412851220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156171 (or 156169 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 6412851220 is about 80080.2798446659. The cubic root of 6412851220 is about 1857.8774125676.

The spelling of 6412851220 in words is "six billion, four hundred twelve million, eight hundred fifty-one thousand, two hundred twenty".