81794706151070 has 128 divisors (see below), whose sum is σ = 163884567555072. Its totient is φ = 29144297779200.

The previous prime is 81794706151063. The next prime is 81794706151079. The reversal of 81794706151070 is 7015160749718.

It is a junction number, because it is equal to n+sod(n) for n = 81794706150997 and 81794706151015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81794706151079) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8452481072 + ... + 8452490748.

It is an arithmetic number, because the mean of its divisors is an integer number (1280348184024).

Almost surely, 2^{81794706151070} is an apocalyptic number.

81794706151070 is an abundant number, since it is smaller than the sum of its proper divisors (82089861404002).

81794706151070 is a wasteful number, since it uses less digits than its factorization.

81794706151070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17586.

The product of its (nonzero) digits is 2963520, while the sum is 56.

The spelling of 81794706151070 in words is "eighty-one trillion, seven hundred ninety-four billion, seven hundred six million, one hundred fifty-one thousand, seventy".