54446351515 has 4 divisors (see below), whose sum is σ = 65335621824. Its totient is φ = 43557081208.

The previous prime is 54446351471. The next prime is 54446351527. The reversal of 54446351515 is 51515364445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51515364445 = 5 ⋅10303072889.

It is a cyclic number.

It is not a de Polignac number, because 54446351515 - 2¹⁵ = 54446318747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5444635147 + ... + 5444635156.

It is an arithmetic number, because the mean of its divisors is an integer number (16333905456).

Almost surely, 2^54446351515 is an apocalyptic number.

54446351515 is a deficient number, since it is larger than the sum of its proper divisors (10889270309).

54446351515 is a wasteful number, since it uses less digits than its factorization.

54446351515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889270308.

The product of its digits is 720000, while the sum is 43.

The spelling of 54446351515 in words is "fifty-four billion, four hundred forty-six million, three hundred fifty-one thousand, five hundred fifteen".