55277778005000 has 80 divisors (see below), whose sum is σ = 129518385521580. Its totient is φ = 22110675584000.

The previous prime is 55277778004979. The next prime is 55277778005053. The reversal of 55277778005000 is 50087777255.

It can be written as a sum of positive squares in 10 ways, for example, as 70827305956 + 55206950699044 = 266134^2 + 7430138^2 .

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 402616364 + ... + 402753636.

Almost surely, 2^{55277778005000} is an apocalyptic number.

55277778005000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55277778005000 is an abundant number, since it is smaller than the sum of its proper divisors (74240607516580).

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

55277778005000 is a wasteful number, since it uses less digits than its factorization.

55277778005000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217836 (or 217817 counting only the distinct ones).

The product of its (nonzero) digits is 4802000, while the sum is 53.

The spelling of 55277778005000 in words is "fifty-five trillion, two hundred seventy-seven billion, seven hundred seventy-eight million, five thousand".