54351621798 has 8 divisors (see below), whose sum is σ = 108703243608. Its totient is φ = 18117207264.

The previous prime is 54351621697. The next prime is 54351621803. The reversal of 54351621798 is 89712615345.

It is a sphenic number, since it is the product of 3 distinct primes.

54351621798 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 54351621798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4529301811 + ... + 4529301822.

It is an arithmetic number, because the mean of its divisors is an integer number (13587905451).

Almost surely, 2^54351621798 is an apocalyptic number.

54351621798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54351621798 is a wasteful number, since it uses less digits than its factorization.

54351621798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9058603638.

The product of its digits is 1814400, while the sum is 51.

The spelling of 54351621798 in words is "fifty-four billion, three hundred fifty-one million, six hundred twenty-one thousand, seven hundred ninety-eight".