54180394469 has 2 divisors, whose sum is σ = 54180394470. Its totient is φ = 54180394468.

The previous prime is 54180394381. The next prime is 54180394487. The reversal of 54180394469 is 96449308145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27924081025 + 26256313444 = 167105^2 + 162038^2 .

It is a cyclic number.

It is not a de Polignac number, because 54180394469 - 2³² = 49885427173 is a prime.

It is a super-2 number, since 2×54180394469² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54180394469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54180394069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27090197234 + 27090197235.

It is an arithmetic number, because the mean of its divisors is an integer number (27090197235).

Almost surely, 2^54180394469 is an apocalyptic number.

It is an amenable number.

54180394469 is a deficient number, since it is larger than the sum of its proper divisors (1).

54180394469 is an equidigital number, since it uses as much as digits as its factorization.

54180394469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 54180394469 in words is "fifty-four billion, one hundred eighty million, three hundred ninety-four thousand, four hundred sixty-nine".