1630780674861 has 8 divisors (see below), whose sum is σ = 2341633789600. Its totient is φ = 1003557338352.

The previous prime is 1630780674857. The next prime is 1630780674893. The reversal of 1630780674861 is 1684760870361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1630780674861 - 2² = 1630780674857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630780654861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20907444511 + ... + 20907444588.

It is an arithmetic number, because the mean of its divisors is an integer number (292704223700).

Almost surely, 2^{1630780674861} is an apocalyptic number.

It is an amenable number.

1630780674861 is a deficient number, since it is larger than the sum of its proper divisors (710853114739).

1630780674861 is a wasteful number, since it uses less digits than its factorization.

1630780674861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41814889115.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 1630780674861 in words is "one trillion, six hundred thirty billion, seven hundred eighty million, six hundred seventy-four thousand, eight hundred sixty-one".