55620782773360 has 160 divisors (see below), whose sum is σ = 151798414136832. Its totient is φ = 18553152384000.

The previous prime is 55620782773333. The next prime is 55620782773363. The reversal of 55620782773360 is 6337728702655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55620782773363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 289217235 + ... + 289409485.

Almost surely, 2^{55620782773360} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55620782773360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75899207068416).

55620782773360 is an abundant number, since it is smaller than the sum of its proper divisors (96177631363472).

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

55620782773360 is a wasteful number, since it uses less digits than its factorization.

55620782773360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206271 (or 206265 counting only the distinct ones).

The product of its (nonzero) digits is 88905600, while the sum is 61.

The spelling of 55620782773360 in words is "fifty-five trillion, six hundred twenty billion, seven hundred eighty-two million, seven hundred seventy-three thousand, three hundred sixty".