54699847921 has 8 divisors (see below), whose sum is σ = 58359606624. Its totient is φ = 51089213760.

The previous prime is 54699847919. The next prime is 54699847933. The reversal of 54699847921 is 12974899645.

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 54699847921 - 2¹ = 54699847919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54699847021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12278835 + ... + 12283288.

It is an arithmetic number, because the mean of its divisors is an integer number (7294950828).

Almost surely, 2^54699847921 is an apocalyptic number.

It is an amenable number.

54699847921 is a deficient number, since it is larger than the sum of its proper divisors (3659758703).

54699847921 is a wasteful number, since it uses less digits than its factorization.

54699847921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24562271.

The product of its digits is 39191040, while the sum is 64.

The spelling of 54699847921 in words is "fifty-four billion, six hundred ninety-nine million, eight hundred forty-seven thousand, nine hundred twenty-one".