2816863401420 has 144 divisors (see below), whose sum is σ = 8735240562048. Its totient is φ = 734426726400.

The previous prime is 2816863401371. The next prime is 2816863401421. The reversal of 2816863401420 is 241043686182.

2816863401420 is a `hidden beast` number, since 2 + 8 + 1 + 6 + 8 + 634 + 0 + 1 + 4 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2816863401421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8095020 + ... + 8435820.

It is an arithmetic number, because the mean of its divisors is an integer number (60661392792).

Almost surely, 2^{2816863401420} is an apocalyptic number.

2816863401420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2816863401420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4367620281024).

2816863401420 is an abundant number, since it is smaller than the sum of its proper divisors (5918377160628).

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

2816863401420 is a wasteful number, since it uses less digits than its factorization.

2816863401420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341840 (or 341835 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 2816863401420 in words is "two trillion, eight hundred sixteen billion, eight hundred sixty-three million, four hundred one thousand, four hundred twenty".