55143405768 has 64 divisors (see below), whose sum is σ = 150467339520. Its totient is φ = 16701652800.

The previous prime is 55143405761. The next prime is 55143405787. The reversal of 55143405768 is 86750434155.

55143405768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55143405761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478971 + ... + 582837.

It is an arithmetic number, because the mean of its divisors is an integer number (2351052180).

Almost surely, 2^55143405768 is an apocalyptic number.

It is an amenable number.

55143405768 is an abundant number, since it is smaller than the sum of its proper divisors (95323933752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55143405768 is a wasteful number, since it uses less digits than its factorization.

55143405768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105898 (or 105894 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 55143405768 in words is "fifty-five billion, one hundred forty-three million, four hundred five thousand, seven hundred sixty-eight".