11615971485 has 8 divisors (see below), whose sum is σ = 18585554400. Its totient is φ = 6195184784.

The previous prime is 11615971483. The next prime is 11615971487. The reversal of 11615971485 is 58417951611.

It is an interprime number because it is at equal distance from previous prime (11615971483) and next prime (11615971487).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11615971485 - 2¹ = 11615971483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11615971483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387199035 + ... + 387199064.

It is an arithmetic number, because the mean of its divisors is an integer number (2323194300).

Almost surely, 2^11615971485 is an apocalyptic number.

11615971485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11615971485 is a deficient number, since it is larger than the sum of its proper divisors (6969582915).

11615971485 is an equidigital number, since it uses as much as digits as its factorization.

11615971485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774398107.

The product of its digits is 302400, while the sum is 48.

The spelling of 11615971485 in words is "eleven billion, six hundred fifteen million, nine hundred seventy-one thousand, four hundred eighty-five".