81014377 has 8 divisors (see below), whose sum is σ = 83832320. Its totient is φ = 78209280.

The previous prime is 81014363. The next prime is 81014389. The reversal of 81014377 is 77341018.

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

It is not a de Polignac number, because 81014377 - 2¹⁵ = 80981609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81014327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10633 + ... + 16585.

It is an arithmetic number, because the mean of its divisors is an integer number (10479040).

Almost surely, 2^81014377 is an apocalyptic number.

It is an amenable number.

81014377 is a deficient number, since it is larger than the sum of its proper divisors (2817943).

81014377 is a wasteful number, since it uses less digits than its factorization.

81014377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6423.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 81014377 is about 9000.7986867833. The cubic root of 81014377 is about 432.7004686174.

The spelling of 81014377 in words is "eighty-one million, fourteen thousand, three hundred seventy-seven".