15827079420 has 144 divisors (see below), whose sum is σ = 51489678240. Its totient is φ = 3922933248.

The previous prime is 15827079403. The next prime is 15827079427. The reversal of 15827079420 is 2497072851.

It is a happy number.

15827079420 is a `hidden beast` number, since 15 + 82 + 70 + 79 + 420 = 666.

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 (15827079427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137602 + ... + 224918.

It is an arithmetic number, because the mean of its divisors is an integer number (357567210).

Almost surely, 2^15827079420 is an apocalyptic number.

15827079420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15827079420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25744839120).

15827079420 is an abundant number, since it is smaller than the sum of its proper divisors (35662598820).

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

15827079420 is a wasteful number, since it uses less digits than its factorization.

15827079420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87404 (or 87399 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 15827079420 in words is "fifteen billion, eight hundred twenty-seven million, seventy-nine thousand, four hundred twenty".