55577643000 has 128 divisors (see below), whose sum is σ = 189166199040. Its totient is φ = 13473360000.

The previous prime is 55577642987. The next prime is 55577643013. The reversal of 55577643000 is 34677555.

It is an interprime number because it is at equal distance from previous prime (55577642987) and next prime (55577643013).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 809086 + ... + 875085.

It is an arithmetic number, because the mean of its divisors is an integer number (1477860930).

Almost surely, 2^55577643000 is an apocalyptic number.

55577643000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55577643000 is an abundant number, since it is smaller than the sum of its proper divisors (133588556040).

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

55577643000 is a wasteful number, since it uses less digits than its factorization.

55577643000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684206 (or 1684192 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 42.

It can be divided in two parts, 55 and 577643000, that added together give a triangular number (577643055 = T₃₃₉₈₉).

The spelling of 55577643000 in words is "fifty-five billion, five hundred seventy-seven million, six hundred forty-three thousand".