81962088963 has 16 divisors (see below), whose sum is σ = 110817323520. Its totient is φ = 53876013984.

The previous prime is 81962088959. The next prime is 81962089003. The reversal of 81962088963 is 36988026918.

It is a happy number.

It is not a de Polignac number, because 81962088963 - 2² = 81962088959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81962088897 and 81962088906.

It is not an unprimeable number, because it can be changed into a prime (81962083963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62181 + ... + 409622.

It is an arithmetic number, because the mean of its divisors is an integer number (6926082720).

Almost surely, 2^81962088963 is an apocalyptic number.

81962088963 is a deficient number, since it is larger than the sum of its proper divisors (28855234557).

81962088963 is a wasteful number, since it uses less digits than its factorization.

81962088963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472618.

The product of its (nonzero) digits is 8957952, while the sum is 60.

The spelling of 81962088963 in words is "eighty-one billion, nine hundred sixty-two million, eighty-eight thousand, nine hundred sixty-three".