54477991389 has 8 divisors (see below), whose sum is σ = 72661064032. Its totient is φ = 36306789840.

The previous prime is 54477991361. The next prime is 54477991481. The reversal of 54477991389 is 98319977445.

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

It is not a de Polignac number, because 54477991389 - 2⁸ = 54477991133 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 (54477991349) 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, 2957059 + ... + 2975424.

It is an arithmetic number, because the mean of its divisors is an integer number (9082633004).

Almost surely, 2^54477991389 is an apocalyptic number.

It is an amenable number.

54477991389 is a deficient number, since it is larger than the sum of its proper divisors (18183072643).

54477991389 is a wasteful number, since it uses less digits than its factorization.

54477991389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935547.

The product of its digits is 68584320, while the sum is 66.

The spelling of 54477991389 in words is "fifty-four billion, four hundred seventy-seven million, nine hundred ninety-one thousand, three hundred eighty-nine".