55397793750 has 384 divisors, whose sum is σ = 163710771840. Its totient is φ = 12364800000.

The previous prime is 55397793739. The next prime is 55397793757. The reversal of 55397793750 is 5739779355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55397793757) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 120168520 + ... + 120168980.

It is an arithmetic number, because the mean of its divisors is an integer number (426330135).

Almost surely, 2^55397793750 is an apocalyptic number.

55397793750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55397793750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81855385920).

55397793750 is an abundant number, since it is smaller than the sum of its proper divisors (108312978090).

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

55397793750 is a wasteful number, since it uses less digits than its factorization.

55397793750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 31255875, while the sum is 60.

The spelling of 55397793750 in words is "fifty-five billion, three hundred ninety-seven million, seven hundred ninety-three thousand, seven hundred fifty".