14961615987 has 8 divisors (see below), whose sum is σ = 20998759360. Its totient is φ = 9449441640.

The previous prime is 14961615971. The next prime is 14961616001. The reversal of 14961615987 is 78951616941.

It is a happy number.

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

It is not a de Polignac number, because 14961615987 - 2⁴ = 14961615971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 262484491 = 14961615987 / (1 + 4 + 9 + 6 + 1 + 6 + 1 + 5 + 9 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14961615947) 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, 131242189 + ... + 131242302.

It is an arithmetic number, because the mean of its divisors is an integer number (2624844920).

Almost surely, 2^14961615987 is an apocalyptic number.

14961615987 is a deficient number, since it is larger than the sum of its proper divisors (6037143373).

14961615987 is a wasteful number, since it uses less digits than its factorization.

14961615987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262484513.

The product of its digits is 3265920, while the sum is 57.

The spelling of 14961615987 in words is "fourteen billion, nine hundred sixty-one million, six hundred fifteen thousand, nine hundred eighty-seven".