54781591378 has 32 divisors (see below), whose sum is σ = 84942950400. Its totient is φ = 26482504704.

The previous prime is 54781591373. The next prime is 54781591439. The reversal of 54781591378 is 87319518745.

It is not an unprimeable number, because it can be changed into a prime (54781591373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5182863 + ... + 5193421.

It is an arithmetic number, because the mean of its divisors is an integer number (2654467200).

Almost surely, 2^54781591378 is an apocalyptic number.

54781591378 is a deficient number, since it is larger than the sum of its proper divisors (30161359022).

54781591378 is a wasteful number, since it uses less digits than its factorization.

54781591378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274.

The product of its digits is 8467200, while the sum is 58.

The spelling of 54781591378 in words is "fifty-four billion, seven hundred eighty-one million, five hundred ninety-one thousand, three hundred seventy-eight".