81926367306 has 32 divisors (see below), whose sum is σ = 191244533760. Its totient is φ = 22909500336.

The previous prime is 81926367277. The next prime is 81926367317. The reversal of 81926367306 is 60376362918.

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, 20749386 + ... + 20753333.

It is an arithmetic number, because the mean of its divisors is an integer number (5976391680).

Almost surely, 2^81926367306 is an apocalyptic number.

81926367306 is an abundant number, since it is smaller than the sum of its proper divisors (109318166454).

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

81926367306 is a wasteful number, since it uses less digits than its factorization.

81926367306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41502778.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 81926367306 in words is "eighty-one billion, nine hundred twenty-six million, three hundred sixty-seven thousand, three hundred six".