55778307750830 has 16 divisors (see below), whose sum is σ = 114743947373280. Its totient is φ = 19123991228832.

The previous prime is 55778307750821. The next prime is 55778307750833. The reversal of 55778307750830 is 3805770387755.

It is a super-2 number, since 2×55778307750830² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55778307750833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398416483865 + ... + 398416484004.

It is an arithmetic number, because the mean of its divisors is an integer number (7171496710830).

Almost surely, 2^{55778307750830} is an apocalyptic number.

55778307750830 is an abundant number, since it is smaller than the sum of its proper divisors (58965639622450).

55778307750830 is a wasteful number, since it uses less digits than its factorization.

55778307750830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796832967883.

The product of its (nonzero) digits is 172872000, while the sum is 65.

The spelling of 55778307750830 in words is "fifty-five trillion, seven hundred seventy-eight billion, three hundred seven million, seven hundred fifty thousand, eight hundred thirty".