81482214874 has 8 divisors (see below), whose sum is σ = 122224617108. Its totient is φ = 40740675840.

The previous prime is 81482214841. The next prime is 81482214883. The reversal of 81482214874 is 47841228418.

It can be written as a sum of positive squares in 2 ways, for example, as 80424989649 + 1057225225 = 283593^2 + 32515^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132844 + ... + 424984.

Almost surely, 2^81482214874 is an apocalyptic number.

81482214874 is a deficient number, since it is larger than the sum of its proper divisors (40742402234).

81482214874 is a wasteful number, since it uses less digits than its factorization.

81482214874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431600.

The product of its digits is 917504, while the sum is 49.

The spelling of 81482214874 in words is "eighty-one billion, four hundred eighty-two million, two hundred fourteen thousand, eight hundred seventy-four".