81376403246 has 8 divisors (see below), whose sum is σ = 126002172864. Its totient is φ = 39375678960.

The previous prime is 81376403239. The next prime is 81376403257. The reversal of 81376403246 is 64230467318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 81376403197 and 81376403206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656261255 + ... + 656261378.

It is an arithmetic number, because the mean of its divisors is an integer number (15750271608).

Almost surely, 2^81376403246 is an apocalyptic number.

81376403246 is a deficient number, since it is larger than the sum of its proper divisors (44625769618).

81376403246 is a wasteful number, since it uses less digits than its factorization.

81376403246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312522666.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 81376403246 in words is "eighty-one billion, three hundred seventy-six million, four hundred three thousand, two hundred forty-six".