55556671729900 has 72 divisors (see below), whose sum is σ = 134725544982000. Its totient is φ = 19709683968000.

The previous prime is 55556671729877. The next prime is 55556671729903. The reversal of 55556671729900 is 992717665555.

It is not an unprimeable number, because it can be changed into a prime (55556671729903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 615882525 + ... + 615972724.

It is an arithmetic number, because the mean of its divisors is an integer number (1871188124750).

Almost surely, 2^{55556671729900} is an apocalyptic number.

55556671729900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55556671729900 is an abundant number, since it is smaller than the sum of its proper divisors (79168873252100).

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

55556671729900 is a wasteful number, since it uses less digits than its factorization.

55556671729900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231855315 (or 1231855308 counting only the distinct ones).

The product of its (nonzero) digits is 178605000, while the sum is 67.

The spelling of 55556671729900 in words is "fifty-five trillion, five hundred fifty-six billion, six hundred seventy-one million, seven hundred twenty-nine thousand, nine hundred".