54065278899061 has 2 divisors, whose sum is σ = 54065278899062. Its totient is φ = 54065278899060.

The previous prime is 54065278899031. The next prime is 54065278899133. The reversal of 54065278899061 is 16099887256045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49421603002500 + 4643675896561 = 7030050^2 + 2154919^2 .

It is a cyclic number.

It is not a de Polignac number, because 54065278899061 - 2¹⁵ = 54065278866293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54065278899031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27032639449530 + 27032639449531.

It is an arithmetic number, because the mean of its divisors is an integer number (27032639449531).

Almost surely, 2^{54065278899061} is an apocalyptic number.

It is an amenable number.

54065278899061 is a deficient number, since it is larger than the sum of its proper divisors (1).

54065278899061 is an equidigital number, since it uses as much as digits as its factorization.

54065278899061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 261273600, while the sum is 70.

The spelling of 54065278899061 in words is "fifty-four trillion, sixty-five billion, two hundred seventy-eight million, eight hundred ninety-nine thousand, sixty-one".