66240037401 has 8 divisors (see below), whose sum is σ = 88566068160. Its totient is φ = 44037015792.

The previous prime is 66240037363. The next prime is 66240037417. The reversal of 66240037401 is 10473004266.

It is a happy number.

66240037401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 66240037401 - 2⁷ = 66240037273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66240037301) 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, 30751030 + ... + 30753183.

It is an arithmetic number, because the mean of its divisors is an integer number (11070758520).

Almost surely, 2^66240037401 is an apocalyptic number.

It is an amenable number.

66240037401 is a deficient number, since it is larger than the sum of its proper divisors (22326030759).

66240037401 is a wasteful number, since it uses less digits than its factorization.

66240037401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61504575.

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 66240037401 in words is "sixty-six billion, two hundred forty million, thirty-seven thousand, four hundred one".