55878178304481 has 16 divisors (see below), whose sum is σ = 80945380150656. Its totient is φ = 34082265321216.

The previous prime is 55878178304479. The next prime is 55878178304483. The reversal of 55878178304481 is 18440387187855.

It is an interprime number because it is at equal distance from previous prime (55878178304479) and next prime (55878178304483).

It is not a de Polignac number, because 55878178304481 - 2¹ = 55878178304479 is a prime.

It is a super-2 number, since 2×55878178304481² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55878178304483) 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, 6339702685 + ... + 6339711498.

It is an arithmetic number, because the mean of its divisors is an integer number (5059086259416).

Almost surely, 2^{55878178304481} is an apocalyptic number.

It is an amenable number.

55878178304481 is a deficient number, since it is larger than the sum of its proper divisors (25067201846175).

55878178304481 is a wasteful number, since it uses less digits than its factorization.

55878178304481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12679414312.

The product of its (nonzero) digits is 240844800, while the sum is 69.

The spelling of 55878178304481 in words is "fifty-five trillion, eight hundred seventy-eight billion, one hundred seventy-eight million, three hundred four thousand, four hundred eighty-one".