780255011 has 2 divisors, whose sum is σ = 780255012. Its totient is φ = 780255010.

The previous prime is 780254977. The next prime is 780255017. The reversal of 780255011 is 110552087.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-780255011 is a prime.

It is a super-2 number, since 2×780255011² = 1217595764381220242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (780255017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390127505 + 390127506.

It is an arithmetic number, because the mean of its divisors is an integer number (390127506).

Almost surely, 2^780255011 is an apocalyptic number.

780255011 is a deficient number, since it is larger than the sum of its proper divisors (1).

780255011 is an equidigital number, since it uses as much as digits as its factorization.

780255011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 780255011 is about 27933.0451437003. The cubic root of 780255011 is about 920.6167143338.

The spelling of 780255011 in words is "seven hundred eighty million, two hundred fifty-five thousand, eleven".