5723121853 has 6 divisors (see below), whose sum is σ = 5878273466. Its totient is φ = 5567995152.

The previous prime is 5723121847. The next prime is 5723121857. The reversal of 5723121853 is 3581213275.

5723121853 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3678724 + 5719443129 = 1918^2 + 75627^2 .

It is not a de Polignac number, because 5723121853 - 2⁵ = 5723121821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5723121857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 453951 + ... + 466387.

Almost surely, 2^5723121853 is an apocalyptic number.

It is an amenable number.

5723121853 is a deficient number, since it is larger than the sum of its proper divisors (155151613).

5723121853 is an frugal number, since it uses more digits than its factorization.

5723121853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24911 (or 12474 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 5723121853 is about 75651.3175893190. The cubic root of 5723121853 is about 1788.7281054403.

Multiplying 5723121853 by its sum of digits (37), we get a square (211755508561 = 460169²).

5723121853 divided by its sum of digits (37) gives a square (154678969 = 12437²).

The spelling of 5723121853 in words is "five billion, seven hundred twenty-three million, one hundred twenty-one thousand, eight hundred fifty-three".