550664425631 has 4 divisors (see below), whose sum is σ = 551289471264. Its totient is φ = 550039380000.

The previous prime is 550664425559. The next prime is 550664425669. The reversal of 550664425631 is 136524466055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550664425631 is a prime.

It is a super-2 number, since 2×550664425631² (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 (550664125631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312521495 + ... + 312523256.

It is an arithmetic number, because the mean of its divisors is an integer number (137822367816).

Almost surely, 2^550664425631 is an apocalyptic number.

550664425631 is a deficient number, since it is larger than the sum of its proper divisors (625045633).

550664425631 is an equidigital number, since it uses as much as digits as its factorization.

550664425631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625045632.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 550664425631 in words is "five hundred fifty billion, six hundred sixty-four million, four hundred twenty-five thousand, six hundred thirty-one".