4012818282781 has 48 divisors (see below), whose sum is σ = 5180784112000. Its totient is φ = 3104371448640.

The previous prime is 4012818282763. The next prime is 4012818282793. The reversal of 4012818282781 is 1872828182104.

It is not a de Polignac number, because 4012818282781 - 2¹¹ = 4012818280733 is a prime.

It is a super-2 number, since 2×4012818282781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012818282481) 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, 5421121 + ... + 6116713.

Almost surely, 2^{4012818282781} is an apocalyptic number.

It is an amenable number.

4012818282781 is a deficient number, since it is larger than the sum of its proper divisors (1167965829219).

4012818282781 is a wasteful number, since it uses less digits than its factorization.

4012818282781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695775 (or 695750 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 52.

The spelling of 4012818282781 in words is "four trillion, twelve billion, eight hundred eighteen million, two hundred eighty-two thousand, seven hundred eighty-one".