55778975967 has 32 divisors (see below), whose sum is σ = 89735546880. Its totient is φ = 30361633920.

The previous prime is 55778975957. The next prime is 55778975971. The reversal of 55778975967 is 76957987755.

It is not a de Polignac number, because 55778975967 - 2¹⁴ = 55778959583 is a prime.

It is a super-2 number, since 2×55778975967² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55778975957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1741167 + ... + 1772912.

It is an arithmetic number, because the mean of its divisors is an integer number (2804235840).

Almost surely, 2^55778975967 is an apocalyptic number.

55778975967 is a deficient number, since it is larger than the sum of its proper divisors (33956570913).

55778975967 is a wasteful number, since it uses less digits than its factorization.

55778975967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514143.

The product of its digits is 1166886000, while the sum is 75.

The spelling of 55778975967 in words is "fifty-five billion, seven hundred seventy-eight million, nine hundred seventy-five thousand, nine hundred sixty-seven".