785261220645 has 16 divisors (see below), whose sum is σ = 1370637767232. Its totient is φ = 380732712960.

The previous prime is 785261220643. The next prime is 785261220701. The reversal of 785261220645 is 546022162587.

It is not a de Polignac number, because 785261220645 - 2¹ = 785261220643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 785261220594 and 785261220603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785261220641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2379579292 + ... + 2379579621.

It is an arithmetic number, because the mean of its divisors is an integer number (85664860452).

Almost surely, 2^785261220645 is an apocalyptic number.

It is an amenable number.

785261220645 is a deficient number, since it is larger than the sum of its proper divisors (585376546587).

785261220645 is a wasteful number, since it uses less digits than its factorization.

785261220645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759158932.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 785261220645 in words is "seven hundred eighty-five billion, two hundred sixty-one million, two hundred twenty thousand, six hundred forty-five".