55787678755 has 8 divisors (see below), whose sum is σ = 67608039024. Its totient is φ = 44188260000.

The previous prime is 55787678753. The next prime is 55787678801.

55787678755 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 55787678755 - 2¹ = 55787678753 is a prime.

It is a super-2 number, since 2×55787678755² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55787678753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55234821 + ... + 55235830.

It is an arithmetic number, because the mean of its divisors is an integer number (8451004878).

Almost surely, 2^55787678755 is an apocalyptic number.

55787678755 is a deficient number, since it is larger than the sum of its proper divisors (11820360269).

55787678755 is a wasteful number, since it uses less digits than its factorization.

55787678755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110470757.

The product of its digits is 576240000, while the sum is 70.

The spelling of 55787678755 in words is "fifty-five billion, seven hundred eighty-seven million, six hundred seventy-eight thousand, seven hundred fifty-five".