66146852115 has 48 divisors (see below), whose sum is σ = 118767841920. Its totient is φ = 34015968000.

The previous prime is 66146852071. The next prime is 66146852143. The reversal of 66146852115 is 51125864166.

66146852115 is a `hidden beast` number, since 6 + 61 + 4 + 68 + 521 + 1 + 5 = 666.

It is not a de Polignac number, because 66146852115 - 2²² = 66142657811 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 946309 + ... + 1013801.

It is an arithmetic number, because the mean of its divisors is an integer number (2474330040).

Almost surely, 2^66146852115 is an apocalyptic number.

66146852115 is a deficient number, since it is larger than the sum of its proper divisors (52620989805).

66146852115 is a wasteful number, since it uses less digits than its factorization.

66146852115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68284 (or 68281 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The spelling of 66146852115 in words is "sixty-six billion, one hundred forty-six million, eight hundred fifty-two thousand, one hundred fifteen".