53780338553 has 2 divisors, whose sum is σ = 53780338554. Its totient is φ = 53780338552.

The previous prime is 53780338537. The next prime is 53780338589. The reversal of 53780338553 is 35583308735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29390644969 + 24389693584 = 171437^2 + 156172^2 .

It is a cyclic number.

It is not a de Polignac number, because 53780338553 - 2⁴ = 53780338537 is a prime.

It is not a weakly prime, because it can be changed into another prime (53780638553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26890169276 + 26890169277.

It is an arithmetic number, because the mean of its divisors is an integer number (26890169277).

Almost surely, 2^53780338553 is an apocalyptic number.

It is an amenable number.

53780338553 is a deficient number, since it is larger than the sum of its proper divisors (1).

53780338553 is an equidigital number, since it uses as much as digits as its factorization.

53780338553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 53780338553 in words is "fifty-three billion, seven hundred eighty million, three hundred thirty-eight thousand, five hundred fifty-three".