71894952087 has 8 divisors (see below), whose sum is σ = 109554212736. Its totient is φ = 41082829752.

The previous prime is 71894952079. The next prime is 71894952121. The reversal of 71894952087 is 78025949817.

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

It is not a de Polignac number, because 71894952087 - 2³ = 71894952079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71894952087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71894952887) 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 7 ways as a sum of consecutive naturals, for example, 1711784553 + ... + 1711784594.

It is an arithmetic number, because the mean of its divisors is an integer number (13694276592).

Almost surely, 2^71894952087 is an apocalyptic number.

71894952087 is a deficient number, since it is larger than the sum of its proper divisors (37659260649).

71894952087 is a wasteful number, since it uses less digits than its factorization.

71894952087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423569157.

The product of its (nonzero) digits is 10160640, while the sum is 60.

The spelling of 71894952087 in words is "seventy-one billion, eight hundred ninety-four million, nine hundred fifty-two thousand, eighty-seven".