71885190210906 has 64 divisors (see below), whose sum is σ = 146606201123328. Its totient is φ = 23489862409728.

The previous prime is 71885190210871. The next prime is 71885190210907. The reversal of 71885190210906 is 60901209158817.

It is a super-2 number, since 2×71885190210906² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71885190210907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1922199400 + ... + 1922236796.

It is an arithmetic number, because the mean of its divisors is an integer number (2290721892552).

Almost surely, 2^{71885190210906} is an apocalyptic number.

71885190210906 is an abundant number, since it is smaller than the sum of its proper divisors (74721010912422).

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

71885190210906 is a wasteful number, since it uses less digits than its factorization.

71885190210906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42375.

The product of its (nonzero) digits is 2177280, while the sum is 57.

The spelling of 71885190210906 in words is "seventy-one trillion, eight hundred eighty-five billion, one hundred ninety million, two hundred ten thousand, nine hundred six".