55778310093616 has 80 divisors (see below), whose sum is σ = 118702378061568. Its totient is φ = 25180421011200.

The previous prime is 55778310093581. The next prime is 55778310093643. The reversal of 55778310093616 is 61639001387755.

It is a super-2 number, since 2×55778310093616² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33607726 + ... + 35228338.

Almost surely, 2^{55778310093616} 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 55778310093616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59351189030784).

55778310093616 is an abundant number, since it is smaller than the sum of its proper divisors (62924067967952).

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

55778310093616 is a wasteful number, since it uses less digits than its factorization.

55778310093616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621970 (or 1621964 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 55778310093616 in words is "fifty-five trillion, seven hundred seventy-eight billion, three hundred ten million, ninety-three thousand, six hundred sixteen".