81462662012 has 6 divisors (see below), whose sum is σ = 142559658528. Its totient is φ = 40731331004.

The previous prime is 81462662011. The next prime is 81462662041. The reversal of 81462662012 is 21026626418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81462662011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10182832748 + ... + 10182832755.

It is an arithmetic number, because the mean of its divisors is an integer number (23759943088).

Almost surely, 2^81462662012 is an apocalyptic number.

It is an amenable number.

81462662012 is a deficient number, since it is larger than the sum of its proper divisors (61096996516).

81462662012 is a wasteful number, since it uses less digits than its factorization.

81462662012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20365665507 (or 20365665505 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 81462662012 in words is "eighty-one billion, four hundred sixty-two million, six hundred sixty-two thousand, twelve".