551149387536 has 240 divisors, whose sum is σ = 1660752580032. Its totient is φ = 156840837120.

The previous prime is 551149387513. The next prime is 551149387559. The reversal of 551149387536 is 635783941155.

It is an interprime number because it is at equal distance from previous prime (551149387513) and next prime (551149387559).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46103736 + ... + 46115688.

Almost surely, 2^551149387536 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 551149387536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830376290016).

551149387536 is an abundant number, since it is smaller than the sum of its proper divisors (1109603192496).

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

551149387536 is a wasteful number, since it uses less digits than its factorization.

551149387536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12470 (or 12453 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 57.

The spelling of 551149387536 in words is "five hundred fifty-one billion, one hundred forty-nine million, three hundred eighty-seven thousand, five hundred thirty-six".