81886303270 has 32 divisors (see below), whose sum is σ = 155354915520. Its totient is φ = 31028350080.

The previous prime is 81886303267. The next prime is 81886303319. The reversal of 81886303270 is 7230368818.

It is a self number, because there is not a number n which added to its sum of digits gives 81886303270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2648466 + ... + 2679205.

It is an arithmetic number, because the mean of its divisors is an integer number (4854841110).

Almost surely, 2^81886303270 is an apocalyptic number.

81886303270 is a deficient number, since it is larger than the sum of its proper divisors (73468612250).

81886303270 is a wasteful number, since it uses less digits than its factorization.

81886303270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327760.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 81886303270 in words is "eighty-one billion, eight hundred eighty-six million, three hundred three thousand, two hundred seventy".