80861785342 has 16 divisors (see below), whose sum is σ = 130687410672. Its totient is φ = 37302387840.

The previous prime is 80861785321. The next prime is 80861785343. The reversal of 80861785342 is 24358716808.

It is a self number, because there is not a number n which added to its sum of digits gives 80861785342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80861785343) 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, 714459 + ... + 819862.

It is an arithmetic number, because the mean of its divisors is an integer number (8167963167).

Almost surely, 2^80861785342 is an apocalyptic number.

80861785342 is a deficient number, since it is larger than the sum of its proper divisors (49825625330).

80861785342 is a wasteful number, since it uses less digits than its factorization.

80861785342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536363.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 80861785342 in words is "eighty billion, eight hundred sixty-one million, seven hundred eighty-five thousand, three hundred forty-two".