64268278555 has 16 divisors (see below), whose sum is σ = 83399035104. Its totient is φ = 47262712320.

The previous prime is 64268278553. The next prime is 64268278567. The reversal of 64268278555 is 55587286246.

It is not a de Polignac number, because 64268278555 - 2¹ = 64268278553 is a prime.

It is a super-3 number, since 3×64268278555³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64268278555.

It is not an unprimeable number, because it can be changed into a prime (64268278553) 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, 2035669 + ... + 2066998.

It is an arithmetic number, because the mean of its divisors is an integer number (5212439694).

Almost surely, 2^64268278555 is an apocalyptic number.

64268278555 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64268278555 is a deficient number, since it is larger than the sum of its proper divisors (19130756549).

64268278555 is a wasteful number, since it uses less digits than its factorization.

64268278555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102926.

The product of its digits is 32256000, while the sum is 58.

The spelling of 64268278555 in words is "sixty-four billion, two hundred sixty-eight million, two hundred seventy-eight thousand, five hundred fifty-five".