81514113 has 8 divisors (see below), whose sum is σ = 108729408. Its totient is φ = 54320784.

The previous prime is 81514091. The next prime is 81514127. The reversal of 81514113 is 31141518.

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

It is not a de Polignac number, because 81514113 - 2⁶ = 81514049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81514163) 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, 7695 + ... + 14907.

It is an arithmetic number, because the mean of its divisors is an integer number (13591176).

Almost surely, 2^81514113 is an apocalyptic number.

It is an amenable number.

81514113 is a deficient number, since it is larger than the sum of its proper divisors (27215295).

81514113 is a wasteful number, since it uses less digits than its factorization.

81514113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10983.

The product of its digits is 480, while the sum is 24.

The square root of 81514113 is about 9028.5166555753. The cubic root of 81514113 is about 433.5883476606.

The spelling of 81514113 in words is "eighty-one million, five hundred fourteen thousand, one hundred thirteen".