2865786552840 has 128 divisors (see below), whose sum is σ = 8947078560000. Its totient is φ = 733439228928.

The previous prime is 2865786552833. The next prime is 2865786552883. The reversal of 2865786552840 is 482556875682.

It is a super-2 number, since 2×2865786552840² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884415 + ... + 3046734.

It is an arithmetic number, because the mean of its divisors is an integer number (69899051250).

Almost surely, 2^{2865786552840} is an apocalyptic number.

2865786552840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2865786552840 is an abundant number, since it is smaller than the sum of its proper divisors (6081292007160).

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

2865786552840 is a wasteful number, since it uses less digits than its factorization.

2865786552840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931359 (or 4931355 counting only the distinct ones).

The product of its (nonzero) digits is 258048000, while the sum is 66.

The spelling of 2865786552840 in words is "two trillion, eight hundred sixty-five billion, seven hundred eighty-six million, five hundred fifty-two thousand, eight hundred forty".