54545640165578 has 16 divisors (see below), whose sum is σ = 82744860504264. Its totient is φ = 26964584017920.

The previous prime is 54545640165547. The next prime is 54545640165587. The reversal of 54545640165578 is 87556104654545.

It can be written as a sum of positive squares in 4 ways, for example, as 37996584954769 + 16549055210809 = 6164137^2 + 4068053^2 .

It is a super-2 number, since 2×54545640165578² (a number of 28 digits) contains 22 as substring.

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, 140811143 + ... + 141197978.

Almost surely, 2^{54545640165578} is an apocalyptic number.

54545640165578 is a deficient number, since it is larger than the sum of its proper divisors (28199220338686).

54545640165578 is a wasteful number, since it uses less digits than its factorization.

54545640165578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282010217.

The product of its (nonzero) digits is 403200000, while the sum is 65.

The spelling of 54545640165578 in words is "fifty-four trillion, five hundred forty-five billion, six hundred forty million, one hundred sixty-five thousand, five hundred seventy-eight".