551020125643 has 8 divisors (see below), whose sum is σ = 593413397136. Its totient is φ = 508627869600.

The previous prime is 551020125613. The next prime is 551020125647. The reversal of 551020125643 is 346521020155.

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

It is a cyclic number.

It is not a de Polignac number, because 551020125643 - 2²⁵ = 550986571211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 551020125599 and 551020125608.

It is not an unprimeable number, because it can be changed into a prime (551020125647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168248 + ... + 1570618.

It is an arithmetic number, because the mean of its divisors is an integer number (74176674642).

Almost surely, 2^551020125643 is an apocalyptic number.

551020125643 is a deficient number, since it is larger than the sum of its proper divisors (42393271493).

551020125643 is a wasteful number, since it uses less digits than its factorization.

551020125643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507725.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 551020125643 its reverse (346521020155), we get a palindrome (897541145798).

The spelling of 551020125643 in words is "five hundred fifty-one billion, twenty million, one hundred twenty-five thousand, six hundred forty-three".