54353666136665 has 48 divisors (see below), whose sum is σ = 78026279852304. Its totient is φ = 36220546252800.

The previous prime is 54353666136589. The next prime is 54353666136667. The reversal of 54353666136665 is 56663166635345.

It can be written as a sum of positive squares in 8 ways, for example, as 5928504261904 + 48425161874761 = 2434852^2 + 6958819^2 .

It is not a de Polignac number, because 54353666136665 - 2²⁰ = 54353665088089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54353666136667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7945706 + ... + 13108835.

It is an arithmetic number, because the mean of its divisors is an integer number (1625547496923).

Almost surely, 2^{54353666136665} is an apocalyptic number.

It is an amenable number.

54353666136665 is a deficient number, since it is larger than the sum of its proper divisors (23672613715639).

54353666136665 is a wasteful number, since it uses less digits than its factorization.

54353666136665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21054858 (or 21054851 counting only the distinct ones).

The product of its digits is 629856000, while the sum is 65.

The spelling of 54353666136665 in words is "fifty-four trillion, three hundred fifty-three billion, six hundred sixty-six million, one hundred thirty-six thousand, six hundred sixty-five".