81876382702 has 32 divisors (see below), whose sum is σ = 132231000960. Its totient is φ = 37881146880.

The previous prime is 81876382697. The next prime is 81876382703. The reversal of 81876382702 is 20728367818.

It is a self number, because there is not a number n which added to its sum of digits gives 81876382702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81876382703) 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 15 ways as a sum of consecutive naturals, for example, 5295499 + ... + 5310937.

It is an arithmetic number, because the mean of its divisors is an integer number (4132218780).

Almost surely, 2^81876382702 is an apocalyptic number.

81876382702 is a deficient number, since it is larger than the sum of its proper divisors (50354618258).

81876382702 is a wasteful number, since it uses less digits than its factorization.

81876382702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18076.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 81876382702 in words is "eighty-one billion, eight hundred seventy-six million, three hundred eighty-two thousand, seven hundred two".