64398477489346 has 96 divisors (see below), whose sum is σ = 130999720602240. Its totient is φ = 23103661743360.

The previous prime is 64398477489301. The next prime is 64398477489361.

64398477489346 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 64398477489346.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5432085 + ... + 12581911.

It is an arithmetic number, because the mean of its divisors is an integer number (1364580422940).

Almost surely, 2^{64398477489346} is an apocalyptic number.

64398477489346 is an abundant number, since it is smaller than the sum of its proper divisors (66601243112894).

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

64398477489346 is a wasteful number, since it uses less digits than its factorization.

64398477489346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7150280 (or 7150269 counting only the distinct ones).

The product of its digits is 21069103104, while the sum is 82.

The spelling of 64398477489346 in words is "sixty-four trillion, three hundred ninety-eight billion, four hundred seventy-seven million, four hundred eighty-nine thousand, three hundred forty-six".