791477567987 has 2 divisors, whose sum is σ = 791477567988. Its totient is φ = 791477567986.

The previous prime is 791477567953. The next prime is 791477568023. The reversal of 791477567987 is 789765774197.

It is a weak prime.

It is an emirp because it is prime and its reverse (789765774197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 791477567987 - 2¹⁶ = 791477502451 is a prime.

It is not a weakly prime, because it can be changed into another prime (791477527987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395738783993 + 395738783994.

It is an arithmetic number, because the mean of its divisors is an integer number (395738783994).

Almost surely, 2^791477567987 is an apocalyptic number.

791477567987 is a deficient number, since it is larger than the sum of its proper divisors (1).

791477567987 is an equidigital number, since it uses as much as digits as its factorization.

791477567987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306912320, while the sum is 77.

The spelling of 791477567987 in words is "seven hundred ninety-one billion, four hundred seventy-seven million, five hundred sixty-seven thousand, nine hundred eighty-seven".