783980920787 has 2 divisors, whose sum is σ = 783980920788. Its totient is φ = 783980920786.

The previous prime is 783980920769. The next prime is 783980920847. The reversal of 783980920787 is 787029089387.

It is a weak prime.

It is an emirp because it is prime and its reverse (787029089387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 783980920787 - 2⁸ = 783980920531 is a prime.

It is a super-2 number, since 2×783980920787² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (783980920487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391990460393 + 391990460394.

It is an arithmetic number, because the mean of its divisors is an integer number (391990460394).

Almost surely, 2^783980920787 is an apocalyptic number.

783980920787 is a deficient number, since it is larger than the sum of its proper divisors (1).

783980920787 is an equidigital number, since it uses as much as digits as its factorization.

783980920787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85349376, while the sum is 68.

The spelling of 783980920787 in words is "seven hundred eighty-three billion, nine hundred eighty million, nine hundred twenty thousand, seven hundred eighty-seven".