7648861830905 has 16 divisors (see below), whose sum is σ = 9238215349200. Its totient is φ = 6079378136832.

The previous prime is 7648861830887. The next prime is 7648861830941. The reversal of 7648861830905 is 5090381688467.

It can be written as a sum of positive squares in 8 ways, for example, as 577618240144 + 7071243590761 = 760012^2 + 2659181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7648861830905 is a prime.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5943071 + ... + 7114619.

It is an arithmetic number, because the mean of its divisors is an integer number (577388459325).

Almost surely, 2^{7648861830905} is an apocalyptic number.

It is an amenable number.

7648861830905 is a deficient number, since it is larger than the sum of its proper divisors (1589353518295).

7648861830905 is a wasteful number, since it uses less digits than its factorization.

7648861830905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180028.

The product of its (nonzero) digits is 69672960, while the sum is 65.

The spelling of 7648861830905 in words is "seven trillion, six hundred forty-eight billion, eight hundred sixty-one million, eight hundred thirty thousand, nine hundred five".