81546965462 has 16 divisors (see below), whose sum is σ = 122780636160. Its totient is φ = 40620279168.

The previous prime is 81546965459. The next prime is 81546965473. The reversal of 81546965462 is 26456964518.

It is a junction number, because it is equal to n+sod(n) for n = 81546965398 and 81546965407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814748 + ... + 909344.

It is an arithmetic number, because the mean of its divisors is an integer number (7673789760).

Almost surely, 2^81546965462 is an apocalyptic number.

81546965462 is a deficient number, since it is larger than the sum of its proper divisors (41233670698).

81546965462 is a wasteful number, since it uses less digits than its factorization.

81546965462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96215.

The product of its digits is 12441600, while the sum is 56.

The spelling of 81546965462 in words is "eighty-one billion, five hundred forty-six million, nine hundred sixty-five thousand, four hundred sixty-two".