54778543116 has 48 divisors (see below), whose sum is σ = 139514833920. Its totient is φ = 16590208320.

The previous prime is 54778543067. The next prime is 54778543117. The reversal of 54778543116 is 61134587745.

It is a happy number.

It is a super-2 number, since 2×54778543116² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54778543117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120165 + ... + 352131.

It is an arithmetic number, because the mean of its divisors is an integer number (2906559040).

Almost surely, 2^54778543116 is an apocalyptic number.

It is an amenable number.

54778543116 is an abundant number, since it is smaller than the sum of its proper divisors (84736290804).

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

54778543116 is a wasteful number, since it uses less digits than its factorization.

54778543116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233774 (or 233772 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 51.

The spelling of 54778543116 in words is "fifty-four billion, seven hundred seventy-eight million, five hundred forty-three thousand, one hundred sixteen".