551648447405 has 16 divisors (see below), whose sum is σ = 722556859968. Its totient is φ = 400977264000.

The previous prime is 551648447347. The next prime is 551648447419. The reversal of 551648447405 is 504744846155.

It is not a de Polignac number, because 551648447405 - 2¹⁰ = 551648446381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2669576 + ... + 2868785.

It is an arithmetic number, because the mean of its divisors is an integer number (45159803748).

Almost surely, 2^551648447405 is an apocalyptic number.

551648447405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551648447405 is a deficient number, since it is larger than the sum of its proper divisors (170908412563).

551648447405 is a wasteful number, since it uses less digits than its factorization.

551648447405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540188.

The product of its (nonzero) digits is 10752000, while the sum is 53.

The spelling of 551648447405 in words is "five hundred fifty-one billion, six hundred forty-eight million, four hundred forty-seven thousand, four hundred five".