788486421761 has 4 divisors (see below), whose sum is σ = 788515781124. Its totient is φ = 788457062400.

The previous prime is 788486421743. The next prime is 788486421773. The reversal of 788486421761 is 167124684887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 167124684887 = 15413 ⋅10843099.

It can be written as a sum of positive squares in 2 ways, for example, as 338862530161 + 449623891600 = 582119^2 + 670540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-788486421761 is a prime.

It is a super-2 number, since 2×788486421761² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 788486421694 and 788486421703.

It is not an unprimeable number, because it can be changed into a prime (788486423761) by changing a digit.

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, 14639360 + ... + 14693121.

It is an arithmetic number, because the mean of its divisors is an integer number (197128945281).

Almost surely, 2^788486421761 is an apocalyptic number.

It is an amenable number.

788486421761 is a deficient number, since it is larger than the sum of its proper divisors (29359363).

788486421761 is a wasteful number, since it uses less digits than its factorization.

788486421761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29359362.

The product of its digits is 28901376, while the sum is 62.

The spelling of 788486421761 in words is "seven hundred eighty-eight billion, four hundred eighty-six million, four hundred twenty-one thousand, seven hundred sixty-one".