64897463989029 has 64 divisors (see below), whose sum is σ = 102507035924480. Its totient is φ = 35747074172160.

The previous prime is 64897463989009. The next prime is 64897463989031. The reversal of 64897463989029 is 92098936479846.

It is not a de Polignac number, because 64897463989029 - 2¹¹ = 64897463986981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64897463989009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 891865602 + ... + 891938364.

It is an arithmetic number, because the mean of its divisors is an integer number (1601672436320).

Almost surely, 2^{64897463989029} is an apocalyptic number.

It is an amenable number.

64897463989029 is a deficient number, since it is larger than the sum of its proper divisors (37609571935451).

64897463989029 is a wasteful number, since it uses less digits than its factorization.

64897463989029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83450.

The product of its (nonzero) digits is 10158317568, while the sum is 84.

The spelling of 64897463989029 in words is "sixty-four trillion, eight hundred ninety-seven billion, four hundred sixty-three million, nine hundred eighty-nine thousand, twenty-nine".