783980920847 has 2 divisors, whose sum is σ = 783980920848. Its totient is φ = 783980920846.

The previous prime is 783980920787. The next prime is 783980920901. The reversal of 783980920847 is 748029089387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 783980920847 - 2²² = 783976726543 is a prime.

It is a super-2 number, since 2×783980920847² (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 (783980929847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391990460423 + 391990460424.

It is an arithmetic number, because the mean of its divisors is an integer number (391990460424).

Almost surely, 2^783980920847 is an apocalyptic number.

783980920847 is a deficient number, since it is larger than the sum of its proper divisors (1).

783980920847 is an equidigital number, since it uses as much as digits as its factorization.

783980920847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48771072, while the sum is 65.

The spelling of 783980920847 in words is "seven hundred eighty-three billion, nine hundred eighty million, nine hundred twenty thousand, eight hundred forty-seven".