15909234285 has 64 divisors (see below), whose sum is σ = 29915730432. Its totient is φ = 7067160576.

The previous prime is 15909234283. The next prime is 15909234293. The reversal of 15909234285 is 58243290951.

It is a happy number.

It is not a de Polignac number, because 15909234285 - 2¹ = 15909234283 is a prime.

It is a super-2 number, since 2×15909234285² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15909234281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3700257 + ... + 3704553.

It is an arithmetic number, because the mean of its divisors is an integer number (467433288).

Almost surely, 2^15909234285 is an apocalyptic number.

15909234285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15909234285 is a deficient number, since it is larger than the sum of its proper divisors (14006496147).

15909234285 is a wasteful number, since it uses less digits than its factorization.

15909234285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302.

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 15909234285 in words is "fifteen billion, nine hundred nine million, two hundred thirty-four thousand, two hundred eighty-five".