66415641151 has 8 divisors (see below), whose sum is σ = 67203667440. Its totient is φ = 65628543552.

The previous prime is 66415641113. The next prime is 66415641199. The reversal of 66415641151 is 15114651466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66415641151 is a prime.

It is a super-2 number, since 2×66415641151² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66415611151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87765 + ... + 374878.

It is an arithmetic number, because the mean of its divisors is an integer number (8400458430).

Almost surely, 2^66415641151 is an apocalyptic number.

66415641151 is a deficient number, since it is larger than the sum of its proper divisors (788026289).

66415641151 is a wasteful number, since it uses less digits than its factorization.

66415641151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464345.

The product of its digits is 86400, while the sum is 40.

The spelling of 66415641151 in words is "sixty-six billion, four hundred fifteen million, six hundred forty-one thousand, one hundred fifty-one".