665147226515 has 8 divisors (see below), whose sum is σ = 810089756880. Its totient is φ = 524175724512.

The previous prime is 665147226451. The next prime is 665147226551. The reversal of 665147226515 is 515622741566.

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 665147226515 - 2⁶ = 665147226451 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992756720 + ... + 992757389.

It is an arithmetic number, because the mean of its divisors is an integer number (101261219610).

Almost surely, 2^665147226515 is an apocalyptic number.

665147226515 is a deficient number, since it is larger than the sum of its proper divisors (144942530365).

665147226515 is a wasteful number, since it uses less digits than its factorization.

665147226515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985514181.

The product of its digits is 3024000, while the sum is 50.

The spelling of 665147226515 in words is "six hundred sixty-five billion, one hundred forty-seven million, two hundred twenty-six thousand, five hundred fifteen".