54375128338861 has 12 divisors (see below), whose sum is σ = 59768276076796. Its totient is φ = 49431460921920.

The previous prime is 54375128338823. The next prime is 54375128338919. The reversal of 54375128338861 is 16883382157345.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6966464032836 + 47408664306025 = 2639406^2 + 6885395^2 .

It is a de Polignac number, because none of the positive numbers 2^k-54375128338861 is a prime.

It is a super-2 number, since 2×54375128338861² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54375128338793 and 54375128338802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54375128338561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10841041 + ... + 15042553.

Almost surely, 2^{54375128338861} is an apocalyptic number.

It is an amenable number.

54375128338861 is a deficient number, since it is larger than the sum of its proper divisors (5393147737935).

54375128338861 is a wasteful number, since it uses less digits than its factorization.

54375128338861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4308492 (or 4308481 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 64.

The spelling of 54375128338861 in words is "fifty-four trillion, three hundred seventy-five billion, one hundred twenty-eight million, three hundred thirty-eight thousand, eight hundred sixty-one".