54691285849 has 2 divisors, whose sum is σ = 54691285850. Its totient is φ = 54691285848.

The previous prime is 54691285757. The next prime is 54691285897. The reversal of 54691285849 is 94858219645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40370855625 + 14320430224 = 200925^2 + 119668^2 .

It is a cyclic number.

It is not a de Polignac number, because 54691285849 - 2⁷ = 54691285721 is a prime.

It is a super-3 number, since 3×54691285849³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (54691295849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27345642924 + 27345642925.

It is an arithmetic number, because the mean of its divisors is an integer number (27345642925).

Almost surely, 2^54691285849 is an apocalyptic number.

It is an amenable number.

54691285849 is a deficient number, since it is larger than the sum of its proper divisors (1).

54691285849 is an equidigital number, since it uses as much as digits as its factorization.

54691285849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24883200, while the sum is 61.

The spelling of 54691285849 in words is "fifty-four billion, six hundred ninety-one million, two hundred eighty-five thousand, eight hundred forty-nine".