1309477307904 has 320 divisors, whose sum is σ = 4011498247680. Its totient is φ = 421431828480.

The previous prime is 1309477307903. The next prime is 1309477307951. The reversal of 1309477307904 is 4097037749031.

1309477307904 is a `hidden beast` number, since 130 + 9 + 477 + 30 + 7 + 9 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309477307903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66995157 + ... + 67014699.

It is an arithmetic number, because the mean of its divisors is an integer number (12535932024).

Almost surely, 2^{1309477307904} 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 1309477307904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2005749123840).

1309477307904 is an abundant number, since it is smaller than the sum of its proper divisors (2702020939776).

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

1309477307904 is a wasteful number, since it uses less digits than its factorization.

1309477307904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19738 (or 19716 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 54.

The spelling of 1309477307904 in words is "one trillion, three hundred nine billion, four hundred seventy-seven million, three hundred seven thousand, nine hundred four".