81482462291 has 8 divisors (see below), whose sum is σ = 84310168800. Its totient is φ = 78655953600.

The previous prime is 81482462263. The next prime is 81482462329. The reversal of 81482462291 is 19226428418.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 81482462291 - 2²⁶ = 81415353427 is a prime.

It is a super-3 number, since 3×81482462291³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (81482462591) 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, 159935 + ... + 434216.

It is an arithmetic number, because the mean of its divisors is an integer number (10538771100).

Almost surely, 2^81482462291 is an apocalyptic number.

81482462291 is a deficient number, since it is larger than the sum of its proper divisors (2827706509).

81482462291 is a wasteful number, since it uses less digits than its factorization.

81482462291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598909.

The product of its digits is 442368, while the sum is 47.

The spelling of 81482462291 in words is "eighty-one billion, four hundred eighty-two million, four hundred sixty-two thousand, two hundred ninety-one".