53777021399 has 2 divisors, whose sum is σ = 53777021400. Its totient is φ = 53777021398.

The previous prime is 53777021357. The next prime is 53777021651. The reversal of 53777021399 is 99312077735.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53777021399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53777021399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53777021099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26888510699 + 26888510700.

It is an arithmetic number, because the mean of its divisors is an integer number (26888510700).

Almost surely, 2^53777021399 is an apocalyptic number.

53777021399 is a deficient number, since it is larger than the sum of its proper divisors (1).

53777021399 is an equidigital number, since it uses as much as digits as its factorization.

53777021399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2500470, while the sum is 53.

The spelling of 53777021399 in words is "fifty-three billion, seven hundred seventy-seven million, twenty-one thousand, three hundred ninety-nine".