66154233601 has 8 divisors (see below), whose sum is σ = 68447882880. Its totient is φ = 63861415632.

The previous prime is 66154233589. The next prime is 66154233631. The reversal of 66154233601 is 10633245166.

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

It is a cyclic number.

It is not a de Polignac number, because 66154233601 - 2¹³ = 66154225409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66154233631) 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, 43705 + ... + 366358.

It is an arithmetic number, because the mean of its divisors is an integer number (8555985360).

Almost surely, 2^66154233601 is an apocalyptic number.

It is an amenable number.

66154233601 is a deficient number, since it is larger than the sum of its proper divisors (2293649279).

66154233601 is a wasteful number, since it uses less digits than its factorization.

66154233601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415655.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 66154233601 its reverse (10633245166), we get a palindrome (76787478767).

The spelling of 66154233601 in words is "sixty-six billion, one hundred fifty-four million, two hundred thirty-three thousand, six hundred one".