15906463380 has 36 divisors (see below), whose sum is σ = 48249606132. Its totient is φ = 4241723520.

The previous prime is 15906463369. The next prime is 15906463381. The reversal of 15906463380 is 8336460951.

15906463380 is a `hidden beast` number, since 1 + 5 + 9 + 0 + 6 + 4 + 633 + 8 + 0 = 666.

15906463380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6451623684 + 9454839696 = 80322^2 + 97236^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15906463381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44184441 + ... + 44184800.

It is an arithmetic number, because the mean of its divisors is an integer number (1340266837).

Almost surely, 2^15906463380 is an apocalyptic number.

15906463380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15906463380 is an abundant number, since it is smaller than the sum of its proper divisors (32343142752).

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

15906463380 is a wasteful number, since it uses less digits than its factorization.

15906463380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88369256 (or 88369251 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 15906463380 in words is "fifteen billion, nine hundred six million, four hundred sixty-three thousand, three hundred eighty".