53778313775 has 12 divisors (see below), whose sum is σ = 67001158824. Its totient is φ = 42818748000.

The previous prime is 53778313711. The next prime is 53778313781. The reversal of 53778313775 is 57731387735.

It is a happy number.

It is not a de Polignac number, because 53778313775 - 2⁶ = 53778313711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53778313775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5092196 + ... + 5102745.

It is an arithmetic number, because the mean of its divisors is an integer number (5583429902).

Almost surely, 2^53778313775 is an apocalyptic number.

53778313775 is a deficient number, since it is larger than the sum of its proper divisors (13222845049).

53778313775 is a wasteful number, since it uses less digits than its factorization.

53778313775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10195162 (or 10195157 counting only the distinct ones).

The product of its digits is 12965400, while the sum is 56.

The spelling of 53778313775 in words is "fifty-three billion, seven hundred seventy-eight million, three hundred thirteen thousand, seven hundred seventy-five".