307378520064 has 840 divisors, whose sum is σ = 1169304288768. Its totient is φ = 78139883520.

The previous prime is 307378520027. The next prime is 307378520069. The reversal of 307378520064 is 460025873703.

307378520064 is a `hidden beast` number, since 30 + 7 + 37 + 8 + 520 + 0 + 64 = 666.

It is not an unprimeable number, because it can be changed into a prime (307378520069) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6539968489 + ... + 6539968535.

Almost surely, 2^307378520064 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 307378520064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (584652144384).

307378520064 is an abundant number, since it is smaller than the sum of its proper divisors (861925768704).

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

307378520064 is an frugal number, since it uses more digits than its factorization.

307378520064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 307378520064 in words is "three hundred seven billion, three hundred seventy-eight million, five hundred twenty thousand, sixty-four".