54143781236 has 18 divisors (see below), whose sum is σ = 100653104118. Its totient is φ = 25479425920.

The previous prime is 54143781233. The next prime is 54143781239. The reversal of 54143781236 is 63218734145.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54143781233) and next prime (54143781239).

It can be written as a sum of positive squares in 3 ways, for example, as 18349411600 + 35794369636 = 135460^2 + 189194^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54143781233) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 23417435 + ... + 23419746.

Almost surely, 2^54143781236 is an apocalyptic number.

It is an amenable number.

54143781236 is a deficient number, since it is larger than the sum of its proper divisors (46509322882).

54143781236 is a wasteful number, since it uses less digits than its factorization.

54143781236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46837219 (or 46837200 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The spelling of 54143781236 in words is "fifty-four billion, one hundred forty-three million, seven hundred eighty-one thousand, two hundred thirty-six".