782640601439 has 2 divisors, whose sum is σ = 782640601440. Its totient is φ = 782640601438.

The previous prime is 782640601409. The next prime is 782640601489. The reversal of 782640601439 is 934106046287.

It is an a-pointer prime, because the next prime (782640601489) can be obtained adding 782640601439 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 782640601439 - 2²⁴ = 782623824223 is a prime.

It is a super-2 number, since 2×782640601439² (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 (782640601409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391320300719 + 391320300720.

It is an arithmetic number, because the mean of its divisors is an integer number (391320300720).

Almost surely, 2^782640601439 is an apocalyptic number.

782640601439 is a deficient number, since it is larger than the sum of its proper divisors (1).

782640601439 is an equidigital number, since it uses as much as digits as its factorization.

782640601439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 782640601439 in words is "seven hundred eighty-two billion, six hundred forty million, six hundred one thousand, four hundred thirty-nine".