2861613611478 has 16 divisors (see below), whose sum is σ = 6359141358960. Its totient is φ = 953871203808.

The previous prime is 2861613611443. The next prime is 2861613611567. The reversal of 2861613611478 is 8741163161682.

2861613611478 is a `hidden beast` number, since 2 + 8 + 6 + 1 + 6 + 13 + 611 + 4 + 7 + 8 = 666.

It is a super-2 number, since 2×2861613611478² (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), and also a Moran number because the ratio is a prime number: 52992844657 = 2861613611478 / (2 + 8 + 6 + 1 + 6 + 1 + 3 + 6 + 1 + 1 + 4 + 7 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26496422275 + ... + 26496422382.

It is an arithmetic number, because the mean of its divisors is an integer number (397446334935).

Almost surely, 2^{2861613611478} is an apocalyptic number.

2861613611478 is an abundant number, since it is smaller than the sum of its proper divisors (3497527747482).

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

2861613611478 is a wasteful number, since it uses less digits than its factorization.

2861613611478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52992844668 (or 52992844662 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 2861613611478 in words is "two trillion, eight hundred sixty-one billion, six hundred thirteen million, six hundred eleven thousand, four hundred seventy-eight".