66751803137 has 8 divisors (see below), whose sum is σ = 66926613600. Its totient is φ = 66577109760.

The previous prime is 66751803133. The next prime is 66751803161. The reversal of 66751803137 is 73130815766.

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 66751803137 - 2² = 66751803133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66751803091 and 66751803100.

It is not an unprimeable number, because it can be changed into a prime (66751803133) 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, 1176962 + ... + 1232372.

It is an arithmetic number, because the mean of its divisors is an integer number (8365826700).

Almost surely, 2^66751803137 is an apocalyptic number.

It is an amenable number.

66751803137 is a deficient number, since it is larger than the sum of its proper divisors (174810463).

66751803137 is a wasteful number, since it uses less digits than its factorization.

66751803137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58543.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 66751803137 in words is "sixty-six billion, seven hundred fifty-one million, eight hundred three thousand, one hundred thirty-seven".