66014251652361 has 4 divisors (see below), whose sum is σ = 88019002203152. Its totient is φ = 44009501101572.

The previous prime is 66014251652347. The next prime is 66014251652381. The reversal of 66014251652361 is 16325615241066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66014251652361 - 2²⁵ = 66014218097929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66014251652361.

It is not an unprimeable number, because it can be changed into a prime (66014251652381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11002375275391 + ... + 11002375275396.

It is an arithmetic number, because the mean of its divisors is an integer number (22004750550788).

Almost surely, 2^{66014251652361} is an apocalyptic number.

It is an amenable number.

66014251652361 is a deficient number, since it is larger than the sum of its proper divisors (22004750550791).

66014251652361 is a wasteful number, since it uses less digits than its factorization.

66014251652361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22004750550790.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 66014251652361 in words is "sixty-six trillion, fourteen billion, two hundred fifty-one million, six hundred fifty-two thousand, three hundred sixty-one".