54551588778380 has 144 divisors (see below), whose sum is σ = 121461181811424. Its totient is φ = 20573808998400.

The previous prime is 54551588778311. The next prime is 54551588778383. The reversal of 54551588778380 is 8387788515545.

It is a super-3 number, since 3×54551588778380³ (a number of 42 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54551588778298 and 54551588778307.

It is not an unprimeable number, because it can be changed into a prime (54551588778383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123793919 + ... + 124233801.

It is an arithmetic number, because the mean of its divisors is an integer number (843480429246).

Almost surely, 2^{54551588778380} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54551588778380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60730590905712).

54551588778380 is an abundant number, since it is smaller than the sum of its proper divisors (66909593033044).

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

54551588778380 is a wasteful number, since it uses less digits than its factorization.

54551588778380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440124 (or 440093 counting only the distinct ones).

The product of its (nonzero) digits is 1505280000, while the sum is 74.

The spelling of 54551588778380 in words is "fifty-four trillion, five hundred fifty-one billion, five hundred eighty-eight million, seven hundred seventy-eight thousand, three hundred eighty".