7936398952784 has 20 divisors (see below), whose sum is σ = 15377098076916. Its totient is φ = 3968115578112.

The previous prime is 7936398952711. The next prime is 7936398952819. The reversal of 7936398952784 is 4872598936397.

It can be written as a sum of positive squares in 2 ways, for example, as 5481311088400 + 2455087864384 = 2341220^2 + 1566872^2 .

It is a super-2 number, since 2×7936398952784² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7936398952699 and 7936398952708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4459679 + ... + 5980094.

Almost surely, 2^{7936398952784} is an apocalyptic number.

It is an amenable number.

7936398952784 is a deficient number, since it is larger than the sum of its proper divisors (7440699124132).

7936398952784 is a wasteful number, since it uses less digits than its factorization.

7936398952784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10487294 (or 10487288 counting only the distinct ones).

The product of its digits is 4938071040, while the sum is 80.

The spelling of 7936398952784 in words is "seven trillion, nine hundred thirty-six billion, three hundred ninety-eight million, nine hundred fifty-two thousand, seven hundred eighty-four".