66031189497260 has 96 divisors (see below), whose sum is σ = 149746530595200. Its totient is φ = 24313135841280.

The previous prime is 66031189497257. The next prime is 66031189497269. The reversal of 66031189497260 is 6279498113066.

It is a junction number, because it is equal to n+sod(n) for n = 66031189497193 and 66031189497202.

It is not an unprimeable number, because it can be changed into a prime (66031189497269) 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, 231447500 + ... + 231732620.

It is an arithmetic number, because the mean of its divisors is an integer number (1559859693700).

Almost surely, 2^{66031189497260} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66031189497260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74873265297600).

66031189497260 is an abundant number, since it is smaller than the sum of its proper divisors (83715341097940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66031189497260 is a wasteful number, since it uses less digits than its factorization.

66031189497260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287611 (or 287609 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 66031189497260 in words is "sixty-six trillion, thirty-one billion, one hundred eighty-nine million, four hundred ninety-seven thousand, two hundred sixty".