55357840993 has 48 divisors (see below), whose sum is σ = 71329325760. Its totient is φ = 42559703424.

The previous prime is 55357840919. The next prime is 55357840999. The reversal of 55357840993 is 39904875355.

It is not a de Polignac number, because 55357840993 - 2⁹ = 55357840481 is a prime.

It is a super-3 number, since 3×55357840993³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55357840999) 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 47 ways as a sum of consecutive naturals, for example, 5390898 + ... + 5401156.

It is an arithmetic number, because the mean of its divisors is an integer number (1486027620).

Almost surely, 2^55357840993 is an apocalyptic number.

It is an amenable number.

55357840993 is a deficient number, since it is larger than the sum of its proper divisors (15971484767).

55357840993 is a wasteful number, since it uses less digits than its factorization.

55357840993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526 (or 10519 counting only the distinct ones).

The product of its (nonzero) digits is 20412000, while the sum is 58.

The spelling of 55357840993 in words is "fifty-five billion, three hundred fifty-seven million, eight hundred forty thousand, nine hundred ninety-three".