2813378406660 has 36 divisors (see below), whose sum is σ = 8533914500748. Its totient is φ = 750234241728.

The previous prime is 2813378406563. The next prime is 2813378406673. The reversal of 2813378406660 is 666048733182.

It can be written as a sum of positive squares in 2 ways, for example, as 1105071898176 + 1708306508484 = 1051224^2 + 1307022^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 2813378406597 and 2813378406606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7814939839 + ... + 7814940198.

Almost surely, 2^{2813378406660} is an apocalyptic number.

2813378406660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2813378406660 is an abundant number, since it is smaller than the sum of its proper divisors (5720536094088).

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

2813378406660 is a wasteful number, since it uses less digits than its factorization.

2813378406660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15629880052 (or 15629880047 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 2813378406660 in words is "two trillion, eight hundred thirteen billion, three hundred seventy-eight million, four hundred six thousand, six hundred sixty".