783980920553 has 2 divisors, whose sum is σ = 783980920554. Its totient is φ = 783980920552.

The previous prime is 783980920549. The next prime is 783980920577. The reversal of 783980920553 is 355029089387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587197298944 + 196783621609 = 766288^2 + 443603^2 .

It is a cyclic number.

It is not a de Polignac number, because 783980920553 - 2² = 783980920549 is a prime.

It is a super-2 number, since 2×783980920553² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 783980920492 and 783980920501.

It is not a weakly prime, because it can be changed into another prime (783980920543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 391990460276 + 391990460277.

It is an arithmetic number, because the mean of its divisors is an integer number (391990460277).

Almost surely, 2^783980920553 is an apocalyptic number.

It is an amenable number.

783980920553 is a deficient number, since it is larger than the sum of its proper divisors (1).

783980920553 is an equidigital number, since it uses as much as digits as its factorization.

783980920553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The spelling of 783980920553 in words is "seven hundred eighty-three billion, nine hundred eighty million, nine hundred twenty thousand, five hundred fifty-three".