81467414624 has 12 divisors (see below), whose sum is σ = 160388972604. Its totient is φ = 40733707296.

The previous prime is 81467414621. The next prime is 81467414641. The reversal of 81467414624 is 42641476418.

It is a super-2 number, since 2×81467414624² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81467414621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272928322 + ... + 1272928385.

It is an arithmetic number, because the mean of its divisors is an integer number (13365747717).

Almost surely, 2^81467414624 is an apocalyptic number.

It is an amenable number.

81467414624 is a deficient number, since it is larger than the sum of its proper divisors (78921557980).

81467414624 is a wasteful number, since it uses less digits than its factorization.

81467414624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545856717 (or 2545856709 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 47.

The spelling of 81467414624 in words is "eighty-one billion, four hundred sixty-seven million, four hundred fourteen thousand, six hundred twenty-four".