55688071938 has 8 divisors (see below), whose sum is σ = 111376143888. Its totient is φ = 18562690644.

The previous prime is 55688071931. The next prime is 55688071939. The reversal of 55688071938 is 83917088655.

It is a sphenic number, since it is the product of 3 distinct primes.

55688071938 is an admirable number.

It is a super-2 number, since 2×55688071938² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55688071931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4640672656 + ... + 4640672667.

It is an arithmetic number, because the mean of its divisors is an integer number (13922017986).

Almost surely, 2^55688071938 is an apocalyptic number.

55688071938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55688071938 is a wasteful number, since it uses less digits than its factorization.

55688071938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281345328.

The product of its (nonzero) digits is 14515200, while the sum is 60.

The spelling of 55688071938 in words is "fifty-five billion, six hundred eighty-eight million, seventy-one thousand, nine hundred thirty-eight".