55729382178 has 32 divisors (see below), whose sum is σ = 111648087936. Its totient is φ = 18544936448.

The previous prime is 55729382171. The next prime is 55729382207. The reversal of 55729382178 is 87128392755.

It is not an unprimeable number, because it can be changed into a prime (55729382171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13404076 + ... + 13408232.

It is an arithmetic number, because the mean of its divisors is an integer number (3489002748).

Almost surely, 2^55729382178 is an apocalyptic number.

55729382178 is an abundant number, since it is smaller than the sum of its proper divisors (55918705758).

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

55729382178 is a wasteful number, since it uses less digits than its factorization.

55729382178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418.

The product of its digits is 8467200, while the sum is 57.

The spelling of 55729382178 in words is "fifty-five billion, seven hundred twenty-nine million, three hundred eighty-two thousand, one hundred seventy-eight".