64008778755 has 16 divisors (see below), whose sum is σ = 102423631104. Its totient is φ = 34134820320.

The previous prime is 64008778753. The next prime is 64008778759. The reversal of 64008778755 is 55787780046.

64008778755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64008778755 - 2¹ = 64008778753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64008778695 and 64008778704.

It is not an unprimeable number, because it can be changed into a prime (64008778753) 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, 29391 + ... + 359000.

It is an arithmetic number, because the mean of its divisors is an integer number (6401476944).

Almost surely, 2^64008778755 is an apocalyptic number.

64008778755 is a deficient number, since it is larger than the sum of its proper divisors (38414852349).

64008778755 is a wasteful number, since it uses less digits than its factorization.

64008778755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399386.

The product of its (nonzero) digits is 13171200, while the sum is 57.

The spelling of 64008778755 in words is "sixty-four billion, eight million, seven hundred seventy-eight thousand, seven hundred fifty-five".