551242540323 has 12 divisors (see below), whose sum is σ = 814756416760. Its totient is φ = 358948630656.

The previous prime is 551242540319. The next prime is 551242540327. The reversal of 551242540323 is 323045242155.

551242540323 is a `hidden beast` number, since 5 + 5 + 1 + 242 + 5 + 403 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (551242540319) and next prime (551242540327).

It is not a de Polignac number, because 551242540323 - 2² = 551242540319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551242540327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712199278 + ... + 712200051.

Almost surely, 2^551242540323 is an apocalyptic number.

551242540323 is a deficient number, since it is larger than the sum of its proper divisors (263513876437).

551242540323 is a wasteful number, since it uses less digits than its factorization.

551242540323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424399378 (or 1424399375 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 551242540323 its reverse (323045242155), we get a palindrome (874287782478).

The spelling of 551242540323 in words is "five hundred fifty-one billion, two hundred forty-two million, five hundred forty thousand, three hundred twenty-three".