14001661215 has 48 divisors (see below), whose sum is σ = 25185783168. Its totient is φ = 7462401696.

The previous prime is 14001661213. The next prime is 14001661237. The reversal of 14001661215 is 51216610041.

14001661215 is a `hidden beast` number, since 1 + 40 + 0 + 1 + 6 + 612 + 1 + 5 = 666.

It is not a de Polignac number, because 14001661215 - 2¹ = 14001661213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14001661213) 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, 2313984 + ... + 2320026.

It is an arithmetic number, because the mean of its divisors is an integer number (524703816).

Almost surely, 2^14001661215 is an apocalyptic number.

14001661215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

14001661215 is a deficient number, since it is larger than the sum of its proper divisors (11184121953).

14001661215 is an equidigital number, since it uses as much as digits as its factorization.

14001661215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7970 (or 7958 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 14001661215 in words is "fourteen billion, one million, six hundred sixty-one thousand, two hundred fifteen".