309484270464 has 128 divisors (see below), whose sum is σ = 840496711680. Its totient is φ = 100853667840.

The previous prime is 309484270441. The next prime is 309484270471. The reversal of 309484270464 is 464072484903.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16974057 + ... + 16992279.

It is an arithmetic number, because the mean of its divisors is an integer number (6566380560).

Almost surely, 2^309484270464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 309484270464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420248355840).

309484270464 is an abundant number, since it is smaller than the sum of its proper divisors (531012441216).

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

309484270464 is a wasteful number, since it uses less digits than its factorization.

309484270464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19228 (or 19216 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 309484270464 in words is "three hundred nine billion, four hundred eighty-four million, two hundred seventy thousand, four hundred sixty-four".