54185417815 has 8 divisors (see below), whose sum is σ = 65115262368. Its totient is φ = 43286493600.

The previous prime is 54185417801. The next prime is 54185417821. The reversal of 54185417815 is 51871458145.

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

It is not a de Polignac number, because 54185417815 - 2¹³ = 54185409623 is a prime.

It is a super-2 number, since 2×54185417815² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7726227 + ... + 7733236.

It is an arithmetic number, because the mean of its divisors is an integer number (8139407796).

Almost surely, 2^54185417815 is an apocalyptic number.

54185417815 is a deficient number, since it is larger than the sum of its proper divisors (10929844553).

54185417815 is a wasteful number, since it uses less digits than its factorization.

54185417815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15460169.

The product of its digits is 896000, while the sum is 49.

The spelling of 54185417815 in words is "fifty-four billion, one hundred eighty-five million, four hundred seventeen thousand, eight hundred fifteen".