66463129395 has 96 divisors (see below), whose sum is σ = 128122545600. Its totient is φ = 32674876416.

The previous prime is 66463129393. The next prime is 66463129409. The reversal of 66463129395 is 59392136466.

66463129395 is a `hidden beast` number, since 6 + 6 + 463 + 1 + 2 + 93 + 95 = 666.

It is not a de Polignac number, because 66463129395 - 2¹ = 66463129393 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66463129391) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21376101 + ... + 21379209.

It is an arithmetic number, because the mean of its divisors is an integer number (1334609850).

Almost surely, 2^66463129395 is an apocalyptic number.

66463129395 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66463129395 is a deficient number, since it is larger than the sum of its proper divisors (61659416205).

66463129395 is a wasteful number, since it uses less digits than its factorization.

66463129395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086 (or 4067 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 54.

The spelling of 66463129395 in words is "sixty-six billion, four hundred sixty-three million, one hundred twenty-nine thousand, three hundred ninety-five".