54639533933 has 2 divisors, whose sum is σ = 54639533934. Its totient is φ = 54639533932.

The previous prime is 54639533903. The next prime is 54639533939. The reversal of 54639533933 is 33933593645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28219632169 + 26419901764 = 167987^2 + 162542^2 .

It is a cyclic number.

It is not a de Polignac number, because 54639533933 - 2¹² = 54639529837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54639533939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27319766966 + 27319766967.

It is an arithmetic number, because the mean of its divisors is an integer number (27319766967).

Almost surely, 2^54639533933 is an apocalyptic number.

It is an amenable number.

54639533933 is a deficient number, since it is larger than the sum of its proper divisors (1).

54639533933 is an equidigital number, since it uses as much as digits as its factorization.

54639533933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11809800, while the sum is 53.

The spelling of 54639533933 in words is "fifty-four billion, six hundred thirty-nine million, five hundred thirty-three thousand, nine hundred thirty-three".