71583041087 has 4 divisors (see below), whose sum is σ = 71841463896. Its totient is φ = 71324618280.

The previous prime is 71583041053. The next prime is 71583041113. The reversal of 71583041087 is 78014038517.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71583041087 - 2²⁶ = 71515932223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71583041027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129210989 + ... + 129211542.

It is an arithmetic number, because the mean of its divisors is an integer number (17960365974).

Almost surely, 2^71583041087 is an apocalyptic number.

71583041087 is a deficient number, since it is larger than the sum of its proper divisors (258422809).

71583041087 is a wasteful number, since it uses less digits than its factorization.

71583041087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258422808.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 71583041087 in words is "seventy-one billion, five hundred eighty-three million, forty-one thousand, eighty-seven".