54517011387 has 4 divisors (see below), whose sum is σ = 72689348520. Its totient is φ = 36344674256.

The previous prime is 54517011371. The next prime is 54517011413. The reversal of 54517011387 is 78311071545.

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 54517011387 - 2⁴ = 54517011371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54517011287) 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, 9086168562 + ... + 9086168567.

It is an arithmetic number, because the mean of its divisors is an integer number (18172337130).

Almost surely, 2^54517011387 is an apocalyptic number.

54517011387 is a deficient number, since it is larger than the sum of its proper divisors (18172337133).

54517011387 is a wasteful number, since it uses less digits than its factorization.

54517011387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18172337132.

The product of its (nonzero) digits is 117600, while the sum is 42.

The spelling of 54517011387 in words is "fifty-four billion, five hundred seventeen million, eleven thousand, three hundred eighty-seven".