53555644371 has 32 divisors (see below), whose sum is σ = 75703541760. Its totient is φ = 33608244384.

The previous prime is 53555644369. The next prime is 53555644381. The reversal of 53555644371 is 17344655535.

It is a happy number.

53555644371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53555644371 - 2¹ = 53555644369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53555644371.

It is not an unprimeable number, because it can be changed into a prime (53555644301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1657456 + ... + 1689458.

It is an arithmetic number, because the mean of its divisors is an integer number (2365735680).

Almost surely, 2^53555644371 is an apocalyptic number.

53555644371 is a deficient number, since it is larger than the sum of its proper divisors (22147897389).

53555644371 is a wasteful number, since it uses less digits than its factorization.

53555644371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32415.

The product of its digits is 3780000, while the sum is 48.

The spelling of 53555644371 in words is "fifty-three billion, five hundred fifty-five million, six hundred forty-four thousand, three hundred seventy-one".