54691244219645 has 64 divisors (see below), whose sum is σ = 74963250496512. Its totient is φ = 37948878336000.

The previous prime is 54691244219641. The next prime is 54691244219669.

54691244219645 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 54691244219645 - 2² = 54691244219641 is a prime.

It is a super-2 number, since 2×54691244219645² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54691244219641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130894865 + ... + 131312025.

It is an arithmetic number, because the mean of its divisors is an integer number (1171300789008).

Almost surely, 2^{54691244219645} is an apocalyptic number.

54691244219645 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54691244219645 is a deficient number, since it is larger than the sum of its proper divisors (20272006276867).

54691244219645 is a wasteful number, since it uses less digits than its factorization.

54691244219645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418502.

The product of its digits is 74649600, while the sum is 62.

The spelling of 54691244219645 in words is "fifty-four trillion, six hundred ninety-one billion, two hundred forty-four million, two hundred nineteen thousand, six hundred forty-five".