53917678805020 has 24 divisors (see below), whose sum is σ = 113227455340944. Its totient is φ = 21567008693376.

The previous prime is 53917678804973. The next prime is 53917678805071. The reversal of 53917678805020 is 2050887671935.

It is a self number, because there is not a number n which added to its sum of digits gives 53917678805020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3448024 + ... + 10941856.

It is an arithmetic number, because the mean of its divisors is an integer number (4717810639206).

Almost surely, 2^{53917678805020} is an apocalyptic number.

It is an amenable number.

53917678805020 is an abundant number, since it is smaller than the sum of its proper divisors (59309776535924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53917678805020 is a wasteful number, since it uses less digits than its factorization.

53917678805020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7853589 (or 7853587 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 53917678805020 in words is "fifty-three trillion, nine hundred seventeen billion, six hundred seventy-eight million, eight hundred five thousand, twenty".