782070644461 has 2 divisors, whose sum is σ = 782070644462. Its totient is φ = 782070644460.

The previous prime is 782070644437. The next prime is 782070644471. The reversal of 782070644461 is 164446070287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 780208290436 + 1862354025 = 883294^2 + 43155^2 .

It is a cyclic number.

It is not a de Polignac number, because 782070644461 - 2²⁹ = 781533773549 is a prime.

It is a super-2 number, since 2×782070644461² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (782070644471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391035322230 + 391035322231.

It is an arithmetic number, because the mean of its divisors is an integer number (391035322231).

Almost surely, 2^782070644461 is an apocalyptic number.

It is an amenable number.

782070644461 is a deficient number, since it is larger than the sum of its proper divisors (1).

782070644461 is an equidigital number, since it uses as much as digits as its factorization.

782070644461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 49.

The spelling of 782070644461 in words is "seven hundred eighty-two billion, seventy million, six hundred forty-four thousand, four hundred sixty-one".