2801961785313 has 32 divisors (see below), whose sum is σ = 4401347673600. Its totient is φ = 1755648269568.

The previous prime is 2801961785267. The next prime is 2801961785317. The reversal of 2801961785313 is 3135871691082.

2801961785313 is a `hidden beast` number, since 2 + 8 + 0 + 1 + 9 + 617 + 8 + 5 + 3 + 13 = 666.

It is not a de Polignac number, because 2801961785313 - 2⁹ = 2801961784801 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2801961785313.

It is not an unprimeable number, because it can be changed into a prime (2801961785317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3915106 + ... + 4575147.

It is an arithmetic number, because the mean of its divisors is an integer number (137542114800).

Almost surely, 2^{2801961785313} is an apocalyptic number.

It is an amenable number.

2801961785313 is a deficient number, since it is larger than the sum of its proper divisors (1599385888287).

2801961785313 is a wasteful number, since it uses less digits than its factorization.

2801961785313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8490998 (or 8490992 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 2801961785313 in words is "two trillion, eight hundred one billion, nine hundred sixty-one million, seven hundred eighty-five thousand, three hundred thirteen".