64534331523474 has 12 divisors (see below), whose sum is σ = 139824384967566. Its totient is φ = 21511443841152.

The previous prime is 64534331523461. The next prime is 64534331523539. The reversal of 64534331523474 is 47432513343546.

64534331523474 is a `hidden beast` number, since 6 + 4 + 5 + 3 + 4 + 331 + 5 + 234 + 74 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36157455793449 + 28376875730025 = 6013107^2 + 5326995^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64534331523474.

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 5 ways as a sum of consecutive naturals, for example, 1792620320079 + ... + 1792620320114.

Almost surely, 2^{64534331523474} is an apocalyptic number.

64534331523474 is an abundant number, since it is smaller than the sum of its proper divisors (75290053444092).

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

64534331523474 is a wasteful number, since it uses less digits than its factorization.

64534331523474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585240640201 (or 3585240640198 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 54.

The spelling of 64534331523474 in words is "sixty-four trillion, five hundred thirty-four billion, three hundred thirty-one million, five hundred twenty-three thousand, four hundred seventy-four".