54691285878 has 24 divisors (see below), whose sum is σ = 118530191208. Its totient is φ = 18225443232.

The previous prime is 54691285849. The next prime is 54691285897. The reversal of 54691285878 is 87858219645.

54691285878 is a `hidden beast` number, since 5 + 46 + 9 + 1 + 2 + 8 + 587 + 8 = 666.

It is a super-2 number, since 2×54691285878² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 347500 + ... + 479727.

It is an arithmetic number, because the mean of its divisors is an integer number (4938757967).

Almost surely, 2^54691285878 is an apocalyptic number.

54691285878 is an abundant number, since it is smaller than the sum of its proper divisors (63838905330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54691285878 is a wasteful number, since it uses less digits than its factorization.

54691285878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830908 (or 830905 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 63.

The spelling of 54691285878 in words is "fifty-four billion, six hundred ninety-one million, two hundred eighty-five thousand, eight hundred seventy-eight".