551723981717376 has 640 divisors, whose sum is σ = 1889413764638400. Its totient is φ = 158309370888192.

The previous prime is 551723981717333. The next prime is 551723981717383. The reversal of 551723981717376 is 673717189327155.

551723981717376 is a `hidden beast` number, since 5 + 5 + 1 + 7 + 239 + 8 + 1 + 7 + 17 + 376 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 248650221 + ... + 250859283.

Almost surely, 2^{551723981717376} 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 551723981717376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944706882319200).

551723981717376 is an abundant number, since it is smaller than the sum of its proper divisors (1337689782921024).

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

551723981717376 is a wasteful number, since it uses less digits than its factorization.

551723981717376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209228 (or 2209207 counting only the distinct ones).

The product of its digits is 466754400, while the sum is 72.

The spelling of 551723981717376 in words is "five hundred fifty-one trillion, seven hundred twenty-three billion, nine hundred eighty-one million, seven hundred seventeen thousand, three hundred seventy-six".