1353920720749 has 2 divisors, whose sum is σ = 1353920720750. Its totient is φ = 1353920720748.

The previous prime is 1353920720671. The next prime is 1353920720753. The reversal of 1353920720749 is 9470270293531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1280785631524 + 73135089225 = 1131718^2 + 270435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1353920720749 - 2⁹ = 1353920720237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1353920720696 and 1353920720705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1353920720849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676960360374 + 676960360375.

It is an arithmetic number, because the mean of its divisors is an integer number (676960360375).

Almost surely, 2^{1353920720749} is an apocalyptic number.

It is an amenable number.

1353920720749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1353920720749 is an equidigital number, since it uses as much as digits as its factorization.

1353920720749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 1353920720749 in words is "one trillion, three hundred fifty-three billion, nine hundred twenty million, seven hundred twenty thousand, seven hundred forty-nine".