54619644691645 has 24 divisors (see below), whose sum is σ = 72366829129728. Its totient is φ = 39545246120160.

The previous prime is 54619644691637. The next prime is 54619644691649.

54619644691645 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 54619644691645 - 2³ = 54619644691637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54619644691649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202287517 + ... + 202557346.

It is an arithmetic number, because the mean of its divisors is an integer number (3015284547072).

Almost surely, 2^{54619644691645} is an apocalyptic number.

54619644691645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54619644691645 is a deficient number, since it is larger than the sum of its proper divisors (17747184438083).

54619644691645 is a wasteful number, since it uses less digits than its factorization.

54619644691645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404845113 (or 404845102 counting only the distinct ones).

The product of its digits is 671846400, while the sum is 70.

The spelling of 54619644691645 in words is "fifty-four trillion, six hundred nineteen billion, six hundred forty-four million, six hundred ninety-one thousand, six hundred forty-five".