15712965378 has 72 divisors (see below), whose sum is σ = 38334025548. Its totient is φ = 4645344000.

The previous prime is 15712965349. The next prime is 15712965379. The reversal of 15712965378 is 87356921751.

15712965378 is a `hidden beast` number, since 1 + 5 + 7 + 12 + 96 + 537 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15650760609 + 62204769 = 125103^2 + 7887^2 .

It is not an unprimeable number, because it can be changed into a prime (15712965379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1318 + ... + 177278.

Almost surely, 2^15712965378 is an apocalyptic number.

15712965378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15712965378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19167012774).

15712965378 is an abundant number, since it is smaller than the sum of its proper divisors (22621060170).

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

15712965378 is a wasteful number, since it uses less digits than its factorization.

15712965378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176032 (or 176018 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The spelling of 15712965378 in words is "fifteen billion, seven hundred twelve million, nine hundred sixty-five thousand, three hundred seventy-eight".