55278050780 has 48 divisors (see below), whose sum is σ = 118896132096. Its totient is φ = 21578276160.

The previous prime is 55278050761. The next prime is 55278050809. The reversal of 55278050780 is 8705087255.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241445 + ... + 410915.

It is an arithmetic number, because the mean of its divisors is an integer number (2477002752).

Almost surely, 2^55278050780 is an apocalyptic number.

It is an amenable number.

55278050780 is an abundant number, since it is smaller than the sum of its proper divisors (63618081316).

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

55278050780 is a wasteful number, since it uses less digits than its factorization.

55278050780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169874 (or 169872 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 47.

The spelling of 55278050780 in words is "fifty-five billion, two hundred seventy-eight million, fifty thousand, seven hundred eighty".