66503376315 has 24 divisors (see below), whose sum is σ = 116851600320. Its totient is φ = 34982596224.

The previous prime is 66503376311. The next prime is 66503376323. The reversal of 66503376315 is 51367330566.

66503376315 is a `hidden beast` number, since 6 + 6 + 5 + 0 + 3 + 3 + 7 + 631 + 5 = 666.

It is not a de Polignac number, because 66503376315 - 2² = 66503376311 is a prime.

It is a super-2 number, since 2×66503376315² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (66503376311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10118995 + ... + 10125564.

It is an arithmetic number, because the mean of its divisors is an integer number (4868816680).

Almost surely, 2^66503376315 is an apocalyptic number.

66503376315 is a deficient number, since it is larger than the sum of its proper divisors (50348224005).

66503376315 is a wasteful number, since it uses less digits than its factorization.

66503376315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20244643 (or 20244640 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 45.

The spelling of 66503376315 in words is "sixty-six billion, five hundred three million, three hundred seventy-six thousand, three hundred fifteen".