55503027780278 has 8 divisors (see below), whose sum is σ = 89658737183568. Its totient is φ = 25616782052424.

The previous prime is 55503027780157. The next prime is 55503027780323. The reversal of 55503027780278 is 87208772030555.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55503027780278² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067365918826 + ... + 1067365918877.

It is an arithmetic number, because the mean of its divisors is an integer number (11207342147946).

Almost surely, 2^{55503027780278} is an apocalyptic number.

55503027780278 is a deficient number, since it is larger than the sum of its proper divisors (34155709403290).

55503027780278 is a wasteful number, since it uses less digits than its factorization.

55503027780278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134731837718.

The product of its (nonzero) digits is 32928000, while the sum is 59.

The spelling of 55503027780278 in words is "fifty-five trillion, five hundred three billion, twenty-seven million, seven hundred eighty thousand, two hundred seventy-eight".