2231378611776 has 168 divisors, whose sum is σ = 6811991659200. Its totient is φ = 723690173952.

The previous prime is 2231378611771. The next prime is 2231378611801. The reversal of 2231378611776 is 6771168731322.

2231378611776 is a `hidden beast` number, since 2 + 2 + 3 + 13 + 7 + 8 + 611 + 7 + 7 + 6 = 666.

It is a super-3 number, since 3×2231378611776³ (a number of 38 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2231378611771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1363476 + ... + 2514323.

It is an arithmetic number, because the mean of its divisors is an integer number (40547569400).

Almost surely, 2^{2231378611776} is an apocalyptic number.

It is an amenable number.

2231378611776 is an abundant number, since it is smaller than the sum of its proper divisors (4580613047424).

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

2231378611776 is an equidigital number, since it uses as much as digits as its factorization.

2231378611776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877863 (or 3877841 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The spelling of 2231378611776 in words is "two trillion, two hundred thirty-one billion, three hundred seventy-eight million, six hundred eleven thousand, seven hundred seventy-six".