554551378920 has 1536 divisors, whose sum is σ = 2503768320000. Its totient is φ = 108990282240.

The previous prime is 554551378907. The next prime is 554551378973. The reversal of 554551378920 is 29873155455.

554551378920 is a `hidden beast` number, since 5 + 5 + 4 + 551 + 3 + 7 + 89 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 895882371 + ... + 895882989.

It is an arithmetic number, because the mean of its divisors is an integer number (1630057500).

Almost surely, 2^554551378920 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 554551378920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251884160000).

554551378920 is an abundant number, since it is smaller than the sum of its proper divisors (1949216941080).

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

554551378920 is a wasteful number, since it uses less digits than its factorization.

554551378920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 54.

The spelling of 554551378920 in words is "five hundred fifty-four billion, five hundred fifty-one million, three hundred seventy-eight thousand, nine hundred twenty".