1309646955264 has 288 divisors, whose sum is σ = 3875734033920. Its totient is φ = 390488457216.

The previous prime is 1309646955259. The next prime is 1309646955329. The reversal of 1309646955264 is 4625596469031.

It is a junction number, because it is equal to n+sod(n) for n = 1309646955198 and 1309646955207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47131327 + ... + 47159105.

It is an arithmetic number, because the mean of its divisors is an integer number (13457409840).

Almost surely, 2^{1309646955264} 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 1309646955264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1937867016960).

1309646955264 is an abundant number, since it is smaller than the sum of its proper divisors (2566087078656).

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

1309646955264 is a wasteful number, since it uses less digits than its factorization.

1309646955264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27995 (or 27981 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 60.

The spelling of 1309646955264 in words is "one trillion, three hundred nine billion, six hundred forty-six million, nine hundred fifty-five thousand, two hundred sixty-four".