2611012860855 has 48 divisors (see below), whose sum is σ = 5476544633664. Its totient is φ = 1123393766400.

The previous prime is 2611012860851. The next prime is 2611012860857. The reversal of 2611012860855 is 5580682101162.

2611012860855 is a `hidden beast` number, since 2 + 6 + 1 + 10 + 1 + 28 + 608 + 5 + 5 = 666.

It is not a de Polignac number, because 2611012860855 - 2² = 2611012860851 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2611012860855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611012860851) 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, 243786696 + ... + 243797405.

It is an arithmetic number, because the mean of its divisors is an integer number (114094679868).

Almost surely, 2^{2611012860855} is an apocalyptic number.

2611012860855 is an abundant number, since it is smaller than the sum of its proper divisors (2865531772809).

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

2611012860855 is a wasteful number, since it uses less digits than its factorization.

2611012860855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487584136 (or 487584133 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 2611012860855 in words is "two trillion, six hundred eleven billion, twelve million, eight hundred sixty thousand, eight hundred fifty-five".