55136998791000 has 768 divisors, whose sum is σ = 222408674242560. Its totient is φ = 12046008268800.

The previous prime is 55136998790987. The next prime is 55136998791041. The reversal of 55136998791000 is 19789963155.

55136998791000 is a `hidden beast` number, since 5 + 513 + 6 + 9 + 9 + 8 + 7 + 9 + 100 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2096689852 + ... + 2096716148.

It is an arithmetic number, because the mean of its divisors is an integer number (289594627920).

Almost surely, 2^{55136998791000} is an apocalyptic number.

55136998791000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55136998791000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111204337121280).

55136998791000 is an abundant number, since it is smaller than the sum of its proper divisors (167271675451560).

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

55136998791000 is a wasteful number, since it uses less digits than its factorization.

55136998791000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27801 (or 27784 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 63.

The spelling of 55136998791000 in words is "fifty-five trillion, one hundred thirty-six billion, nine hundred ninety-eight million, seven hundred ninety-one thousand".