54767815891851 has 4 divisors (see below), whose sum is σ = 73023754522472. Its totient is φ = 36511877261232.

The previous prime is 54767815891819. The next prime is 54767815891883. The reversal of 54767815891851 is 15819851876745.

54767815891851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (54767815891819) and next prime (54767815891883).

It is not a de Polignac number, because 54767815891851 - 2⁵ = 54767815891819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54767815851851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9127969315306 + ... + 9127969315311.

It is an arithmetic number, because the mean of its divisors is an integer number (18255938630618).

Almost surely, 2^{54767815891851} is an apocalyptic number.

54767815891851 is a deficient number, since it is larger than the sum of its proper divisors (18255938630621).

54767815891851 is a wasteful number, since it uses less digits than its factorization.

54767815891851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18255938630620.

The product of its digits is 677376000, while the sum is 75.

The spelling of 54767815891851 in words is "fifty-four trillion, seven hundred sixty-seven billion, eight hundred fifteen million, eight hundred ninety-one thousand, eight hundred fifty-one".