81152463 has 8 divisors (see below), whose sum is σ = 123660928. Its totient is φ = 46372824.

The previous prime is 81152459. The next prime is 81152471. The reversal of 81152463 is 36425118.

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

It is not a de Polignac number, because 81152463 - 2² = 81152459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81152463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81152453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1932181 + ... + 1932222.

It is an arithmetic number, because the mean of its divisors is an integer number (15457616).

Almost surely, 2^81152463 is an apocalyptic number.

81152463 is a deficient number, since it is larger than the sum of its proper divisors (42508465).

81152463 is a wasteful number, since it uses less digits than its factorization.

81152463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864413.

The product of its digits is 5760, while the sum is 30.

The square root of 81152463 is about 9008.4661846510. The cubic root of 81152463 is about 432.9461697060.

The spelling of 81152463 in words is "eighty-one million, one hundred fifty-two thousand, four hundred sixty-three".