55397697194 has 16 divisors (see below), whose sum is σ = 95337010368. Its totient is φ = 23649487872.

The previous prime is 55397697193. The next prime is 55397697197. The reversal of 55397697194 is 49179679355.

It is a self number, because there is not a number n which added to its sum of digits gives 55397697194.

It is not an unprimeable number, because it can be changed into a prime (55397697191) 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, 7694804 + ... + 7701999.

It is an arithmetic number, because the mean of its divisors is an integer number (5958563148).

Almost surely, 2^55397697194 is an apocalyptic number.

55397697194 is a deficient number, since it is larger than the sum of its proper divisors (39939313174).

55397697194 is a wasteful number, since it uses less digits than its factorization.

55397697194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15397069.

The product of its digits is 64297800, while the sum is 65.

The spelling of 55397697194 in words is "fifty-five billion, three hundred ninety-seven million, six hundred ninety-seven thousand, one hundred ninety-four".