2640068426862 has 32 divisors (see below), whose sum is σ = 6025381399200. Its totient is φ = 856238408064.

The previous prime is 2640068426833. The next prime is 2640068426893. The reversal of 2640068426862 is 2686248600462.

2640068426862 is a `hidden beast` number, since 26 + 400 + 68 + 42 + 68 + 62 = 666.

It is a super-2 number, since 2×2640068426862² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2640068426799 and 2640068426808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660675787 + ... + 660679782.

It is an arithmetic number, because the mean of its divisors is an integer number (188293168725).

Almost surely, 2^{2640068426862} is an apocalyptic number.

2640068426862 is an abundant number, since it is smaller than the sum of its proper divisors (3385312972338).

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

2640068426862 is a wasteful number, since it uses less digits than its factorization.

2640068426862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321355617 (or 1321355611 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 54.

The spelling of 2640068426862 in words is "two trillion, six hundred forty billion, sixty-eight million, four hundred twenty-six thousand, eight hundred sixty-two".