54657826505 has 8 divisors (see below), whose sum is σ = 69447591432. Its totient is φ = 41154128128.

The previous prime is 54657826493. The next prime is 54657826537. The reversal of 54657826505 is 50562875645.

It can be written as a sum of positive squares in 4 ways, for example, as 19513575481 + 35144251024 = 139691^2 + 187468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54657826505 - 2¹² = 54657822409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321516542 + ... + 321516711.

It is an arithmetic number, because the mean of its divisors is an integer number (8680948929).

Almost surely, 2^54657826505 is an apocalyptic number.

It is an amenable number.

54657826505 is a deficient number, since it is larger than the sum of its proper divisors (14789764927).

54657826505 is a wasteful number, since it uses less digits than its factorization.

54657826505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643033275.

The product of its (nonzero) digits is 10080000, while the sum is 53.

The spelling of 54657826505 in words is "fifty-four billion, six hundred fifty-seven million, eight hundred twenty-six thousand, five hundred five".