15309455085 has 16 divisors (see below), whose sum is σ = 27216809280. Its totient is φ = 8165042640.

The previous prime is 15309455069. The next prime is 15309455093. The reversal of 15309455085 is 58055490351.

15309455085 is a `hidden beast` number, since 1 + 5 + 3 + 0 + 94 + 550 + 8 + 5 = 666.

It is not a de Polignac number, because 15309455085 - 2⁴ = 15309455069 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 15309455085.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56701551 + ... + 56701820.

It is an arithmetic number, because the mean of its divisors is an integer number (1701050580).

Almost surely, 2^15309455085 is an apocalyptic number.

15309455085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15309455085 is a deficient number, since it is larger than the sum of its proper divisors (11907354195).

15309455085 is a wasteful number, since it uses less digits than its factorization.

15309455085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113403385 (or 113403379 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 15309455085 in words is "fifteen billion, three hundred nine million, four hundred fifty-five thousand, eighty-five".