66031260501 has 8 divisors (see below), whose sum is σ = 88392445344. Its totient is φ = 43845458000.

The previous prime is 66031260479. The next prime is 66031260511. The reversal of 66031260501 is 10506213066.

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 66031260501 - 2¹⁷ = 66031129429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66031260511) 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, 43844706 + ... + 43846211.

It is an arithmetic number, because the mean of its divisors is an integer number (11049055668).

Almost surely, 2^66031260501 is an apocalyptic number.

It is an amenable number.

66031260501 is a deficient number, since it is larger than the sum of its proper divisors (22361184843).

66031260501 is a wasteful number, since it uses less digits than its factorization.

66031260501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87691171.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 66031260501 its reverse (10506213066), we get a palindrome (76537473567).

The spelling of 66031260501 in words is "sixty-six billion, thirty-one million, two hundred sixty thousand, five hundred one".