66031189497258 has 16 divisors (see below), whose sum is σ = 132154924476960. Its totient is φ = 21994972252016.

The previous prime is 66031189497257. The next prime is 66031189497269. The reversal of 66031189497258 is 85279498113066.

It is a junction number, because it is equal to n+sod(n) for n = 66031189497192 and 66031189497201.

It is not an unprimeable number, because it can be changed into a prime (66031189497257) 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, 3856052493 + ... + 3856069616.

It is an arithmetic number, because the mean of its divisors is an integer number (8259682779810).

It is a 2-persistent number, because it is pandigital, and so is 2⋅66031189497258 = 132062378994516, but 3⋅66031189497258 = 198093568491774 is not.

Almost surely, 2^{66031189497258} is an apocalyptic number.

66031189497258 is an abundant number, since it is smaller than the sum of its proper divisors (66123734979702).

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

66031189497258 is a wasteful number, since it uses less digits than its factorization.

66031189497258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7712123541.

The product of its (nonzero) digits is 156764160, while the sum is 69.

The spelling of 66031189497258 in words is "sixty-six trillion, thirty-one billion, one hundred eighty-nine million, four hundred ninety-seven thousand, two hundred fifty-eight".