64118474638044 has 24 divisors (see below), whose sum is σ = 149612701596288. Its totient is φ = 21372406673520.

The previous prime is 64118474638037. The next prime is 64118474638091. The reversal of 64118474638044 is 44083647481146.

It is a super-2 number, since 2×64118474638044² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51636592 + ... + 52863735.

It is an arithmetic number, because the mean of its divisors is an integer number (6233862566512).

Almost surely, 2^{64118474638044} is an apocalyptic number.

It is an amenable number.

64118474638044 is an abundant number, since it is smaller than the sum of its proper divisors (85494226958244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64118474638044 is a wasteful number, since it uses less digits than its factorization.

64118474638044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104551465 (or 104551463 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 60.

The spelling of 64118474638044 in words is "sixty-four trillion, one hundred eighteen billion, four hundred seventy-four million, six hundred thirty-eight thousand, forty-four".