71857359087 has 8 divisors (see below), whose sum is σ = 95836388736. Its totient is φ = 47891617752.

The previous prime is 71857359071. The next prime is 71857359103. The reversal of 71857359087 is 78095375817.

It is an interprime number because it is at equal distance from previous prime (71857359071) and next prime (71857359103).

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

It is not a de Polignac number, because 71857359087 - 2⁴ = 71857359071 is a prime.

It is a super-2 number, since 2×71857359087² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71857359087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71857359887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3309453 + ... + 3331094.

It is an arithmetic number, because the mean of its divisors is an integer number (11979548592).

Almost surely, 2^71857359087 is an apocalyptic number.

71857359087 is a deficient number, since it is larger than the sum of its proper divisors (23979029649).

71857359087 is a wasteful number, since it uses less digits than its factorization.

71857359087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644157.

The product of its (nonzero) digits is 14817600, while the sum is 60.

The spelling of 71857359087 in words is "seventy-one billion, eight hundred fifty-seven million, three hundred fifty-nine thousand, eighty-seven".