64233412978 has 32 divisors (see below), whose sum is σ = 114919833600. Its totient is φ = 26327624400.

The previous prime is 64233412897. The next prime is 64233412987. The reversal of 64233412978 is 87921433246.

It is a super-3 number, since 3×64233412978³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2935723 + ... + 2957521.

It is an arithmetic number, because the mean of its divisors is an integer number (3591244800).

Almost surely, 2^64233412978 is an apocalyptic number.

64233412978 is a deficient number, since it is larger than the sum of its proper divisors (50686420622).

64233412978 is a wasteful number, since it uses less digits than its factorization.

64233412978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30982.

The product of its digits is 1741824, while the sum is 49.

The spelling of 64233412978 in words is "sixty-four billion, two hundred thirty-three million, four hundred twelve thousand, nine hundred seventy-eight".