53506788386 has 8 divisors (see below), whose sum is σ = 80558548380. Its totient is φ = 26653938928.

The previous prime is 53506788373. The next prime is 53506788389. The reversal of 53506788386 is 68388760535.

It can be written as a sum of positive squares in 2 ways, for example, as 48011383225 + 5495405161 = 219115^2 + 74131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (53506788389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49726961 + ... + 49728036.

Almost surely, 2^53506788386 is an apocalyptic number.

53506788386 is a deficient number, since it is larger than the sum of its proper divisors (27051759994).

53506788386 is a wasteful number, since it uses less digits than its factorization.

53506788386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99455268.

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 53506788386 in words is "fifty-three billion, five hundred six million, seven hundred eighty-eight thousand, three hundred eighty-six".