55280216776 has 16 divisors (see below), whose sum is σ = 103656841200. Its totient is φ = 27638392464.

The previous prime is 55280216749. The next prime is 55280216777. The reversal of 55280216776 is 67761208255.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55280216777) 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, 72006 + ... + 340213.

It is an arithmetic number, because the mean of its divisors is an integer number (6478552575).

Almost surely, 2^55280216776 is an apocalyptic number.

It is an amenable number.

55280216776 is a deficient number, since it is larger than the sum of its proper divisors (48376624424).

55280216776 is a wasteful number, since it uses less digits than its factorization.

55280216776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428988 (or 428984 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 55280216776 in words is "fifty-five billion, two hundred eighty million, two hundred sixteen thousand, seven hundred seventy-six".