54718159919 has 4 divisors (see below), whose sum is σ = 56197029144. Its totient is φ = 53239290696.

The previous prime is 54718159897. The next prime is 54718159927. The reversal of 54718159919 is 91995181745.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54718159919 - 2¹² = 54718155823 is a prime.

It is a super-2 number, since 2×54718159919² (a number of 22 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 (54718156919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739434557 + ... + 739434630.

It is an arithmetic number, because the mean of its divisors is an integer number (14049257286).

Almost surely, 2^54718159919 is an apocalyptic number.

54718159919 is a deficient number, since it is larger than the sum of its proper divisors (1478869225).

54718159919 is a wasteful number, since it uses less digits than its factorization.

54718159919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478869224.

The product of its digits is 4082400, while the sum is 59.

The spelling of 54718159919 in words is "fifty-four billion, seven hundred eighteen million, one hundred fifty-nine thousand, nine hundred nineteen".