53777156417 has 2 divisors, whose sum is σ = 53777156418. Its totient is φ = 53777156416.

The previous prime is 53777156413. The next prime is 53777156441. The reversal of 53777156417 is 71465177735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52863666241 + 913490176 = 229921^2 + 30224^2 .

It is a cyclic number.

It is not a de Polignac number, because 53777156417 - 2² = 53777156413 is a prime.

It is not a weakly prime, because it can be changed into another prime (53777156413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26888578208 + 26888578209.

It is an arithmetic number, because the mean of its divisors is an integer number (26888578209).

Almost surely, 2^53777156417 is an apocalyptic number.

It is an amenable number.

53777156417 is a deficient number, since it is larger than the sum of its proper divisors (1).

53777156417 is an equidigital number, since it uses as much as digits as its factorization.

53777156417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4321800, while the sum is 53.

The spelling of 53777156417 in words is "fifty-three billion, seven hundred seventy-seven million, one hundred fifty-six thousand, four hundred seventeen".