54692409509 has 2 divisors, whose sum is σ = 54692409510. Its totient is φ = 54692409508.

The previous prime is 54692409461. The next prime is 54692409559. The reversal of 54692409509 is 90590429645.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53927057284 + 765352225 = 232222^2 + 27665^2 .

It is a cyclic number.

It is not a de Polignac number, because 54692409509 - 2¹⁶ = 54692343973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54692409559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27346204754 + 27346204755.

It is an arithmetic number, because the mean of its divisors is an integer number (27346204755).

Almost surely, 2^54692409509 is an apocalyptic number.

It is an amenable number.

54692409509 is a deficient number, since it is larger than the sum of its proper divisors (1).

54692409509 is an equidigital number, since it uses as much as digits as its factorization.

54692409509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 53.

The spelling of 54692409509 in words is "fifty-four billion, six hundred ninety-two million, four hundred nine thousand, five hundred nine".