71614215440 has 40 divisors (see below), whose sum is σ = 166532466240. Its totient is φ = 28640625536.

The previous prime is 71614215433. The next prime is 71614215467. The reversal of 71614215440 is 4451241617.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 71614215440.

It is an unprimeable number.

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, 394187 + ... + 546453.

It is an arithmetic number, because the mean of its divisors is an integer number (4163311656).

Almost surely, 2^71614215440 is an apocalyptic number.

It is an amenable number.

71614215440 is an abundant number, since it is smaller than the sum of its proper divisors (94918250800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71614215440 is a wasteful number, since it uses less digits than its factorization.

71614215440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158159 (or 158153 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 71614215440 in words is "seventy-one billion, six hundred fourteen million, two hundred fifteen thousand, four hundred forty".