780670032615749 has 2 divisors, whose sum is σ = 780670032615750. Its totient is φ = 780670032615748.

The previous prime is 780670032615689. The next prime is 780670032615757. The reversal of 780670032615749 is 947516230076087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767814007234849 + 12856025380900 = 27709457^2 + 3585530^2 .

It is a cyclic number.

It is not a de Polignac number, because 780670032615749 - 2³⁶ = 780601313139013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (780670032615149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390335016307874 + 390335016307875.

It is an arithmetic number, because the mean of its divisors is an integer number (390335016307875).

It is a 1-persistent number, because it is pandigital, but 2⋅780670032615749 = 1561340065231498 is not.

Almost surely, 2^{780670032615749} is an apocalyptic number.

It is an amenable number.

780670032615749 is a deficient number, since it is larger than the sum of its proper divisors (1).

780670032615749 is an equidigital number, since it uses as much as digits as its factorization.

780670032615749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 106686720, while the sum is 65.

The spelling of 780670032615749 in words is "seven hundred eighty trillion, six hundred seventy billion, thirty-two million, six hundred fifteen thousand, seven hundred forty-nine".