55503027780279 has 32 divisors (see below), whose sum is σ = 75070927008000. Its totient is φ = 36472403042304.

The previous prime is 55503027780157. The next prime is 55503027780323. The reversal of 55503027780279 is 97208772030555.

It is not a de Polignac number, because 55503027780279 - 2³² = 55498732812983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55503027780979) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65984452 + ... + 66820310.

It is an arithmetic number, because the mean of its divisors is an integer number (2345966469000).

Almost surely, 2^{55503027780279} is an apocalyptic number.

55503027780279 is a deficient number, since it is larger than the sum of its proper divisors (19567899227721).

55503027780279 is a wasteful number, since it uses less digits than its factorization.

55503027780279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837007.

The product of its (nonzero) digits is 37044000, while the sum is 60.

The spelling of 55503027780279 in words is "fifty-five trillion, five hundred three billion, twenty-seven million, seven hundred eighty thousand, two hundred seventy-nine".