64046121788 has 12 divisors (see below), whose sum is σ = 122269868952. Its totient is φ = 29111873520.

The previous prime is 64046121787. The next prime is 64046121817. The reversal of 64046121788 is 88712164046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64046121787) 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 3 ways as a sum of consecutive naturals, for example, 727796795 + ... + 727796882.

It is an arithmetic number, because the mean of its divisors is an integer number (10189155746).

Almost surely, 2^64046121788 is an apocalyptic number.

It is an amenable number.

64046121788 is a deficient number, since it is larger than the sum of its proper divisors (58223747164).

64046121788 is a wasteful number, since it uses less digits than its factorization.

64046121788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455593692 (or 1455593690 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 64046121788 in words is "sixty-four billion, forty-six million, one hundred twenty-one thousand, seven hundred eighty-eight".