778046827260261 has 64 divisors (see below), whose sum is σ = 1193073658398720. Its totient is φ = 447347900805120.

The previous prime is 778046827260187. The next prime is 778046827260271. The reversal of 778046827260261 is 162062728640877.

It is not a de Polignac number, because 778046827260261 - 2¹⁹ = 778046826735973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 778046827260192 and 778046827260201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778046827260271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 579694425 + ... + 581035041.

It is an arithmetic number, because the mean of its divisors is an integer number (18641775912480).

Almost surely, 2^{778046827260261} is an apocalyptic number.

It is an amenable number.

778046827260261 is a deficient number, since it is larger than the sum of its proper divisors (415026831138459).

778046827260261 is a wasteful number, since it uses less digits than its factorization.

778046827260261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357246.

The product of its (nonzero) digits is 151732224, while the sum is 66.

The spelling of 778046827260261 in words is "seven hundred seventy-eight trillion, forty-six billion, eight hundred twenty-seven million, two hundred sixty thousand, two hundred sixty-one".