66831854001 has 32 divisors (see below), whose sum is σ = 97470729216. Its totient is φ = 40395672000.

The previous prime is 66831853997. The next prime is 66831854003. The reversal of 66831854001 is 10045813866.

It is not a de Polignac number, because 66831854001 - 2² = 66831853997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66831854003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34609006 + ... + 34610936.

It is an arithmetic number, because the mean of its divisors is an integer number (3045960288).

Almost surely, 2^66831854001 is an apocalyptic number.

It is an amenable number.

66831854001 is a deficient number, since it is larger than the sum of its proper divisors (30638875215).

66831854001 is a wasteful number, since it uses less digits than its factorization.

66831854001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 66831854001 in words is "sixty-six billion, eight hundred thirty-one million, eight hundred fifty-four thousand, one".