2091473660068 has 12 divisors (see below), whose sum is σ = 3941623436380. Its totient is φ = 965295535392.

The previous prime is 2091473660027. The next prime is 2091473660113. The reversal of 2091473660068 is 8600663741902.

It can be written as a sum of positive squares in 2 ways, for example, as 1034130354084 + 1057343305984 = 1016922^2 + 1028272^2 .

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 40220647309 = 2091473660068 / (2 + 0 + 9 + 1 + 4 + 7 + 3 + 6 + 6 + 0 + 0 + 6 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 2091473659997 and 2091473660024.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20110323603 + ... + 20110323706.

Almost surely, 2^{2091473660068} is an apocalyptic number.

It is an amenable number.

2091473660068 is a deficient number, since it is larger than the sum of its proper divisors (1850149776312).

2091473660068 is a wasteful number, since it uses less digits than its factorization.

2091473660068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40220647326 (or 40220647324 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 2091473660068 in words is "two trillion, ninety-one billion, four hundred seventy-three million, six hundred sixty thousand, sixty-eight".