66450136315 has 8 divisors (see below), whose sum is σ = 79994926368. Its totient is φ = 52990267200.

The previous prime is 66450136283. The next prime is 66450136331. The reversal of 66450136315 is 51363105466.

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

It is not a de Polignac number, because 66450136315 - 2⁵ = 66450136283 is a prime.

It is a Duffinian number.

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, 21228511 + ... + 21231640.

It is an arithmetic number, because the mean of its divisors is an integer number (9999365796).

Almost surely, 2^66450136315 is an apocalyptic number.

66450136315 is a deficient number, since it is larger than the sum of its proper divisors (13544790053).

66450136315 is a wasteful number, since it uses less digits than its factorization.

66450136315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42460469.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 66450136315 in words is "sixty-six billion, four hundred fifty million, one hundred thirty-six thousand, three hundred fifteen".