551797751999 has 8 divisors (see below), whose sum is σ = 594962298000. Its totient is φ = 508735858176.

The previous prime is 551797751987. The next prime is 551797752001. The reversal of 551797751999 is 999157797155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-551797751999 is a prime.

It is a super-2 number, since 2×551797751999² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551797751959) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25651874 + ... + 25673375.

It is an arithmetic number, because the mean of its divisors is an integer number (74370287250).

Almost surely, 2^551797751999 is an apocalyptic number.

551797751999 is a deficient number, since it is larger than the sum of its proper divisors (43164546001).

551797751999 is a wasteful number, since it uses less digits than its factorization.

551797751999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51326089.

The product of its digits is 281302875, while the sum is 74.

The spelling of 551797751999 in words is "five hundred fifty-one billion, seven hundred ninety-seven million, seven hundred fifty-one thousand, nine hundred ninety-nine".