71503452405 has 64 divisors (see below), whose sum is σ = 158483865600. Its totient is φ = 29715716160.

The previous prime is 71503452401. The next prime is 71503452407. The reversal of 71503452405 is 50425430517.

71503452405 is a `hidden beast` number, since 71 + 5 + 0 + 345 + 240 + 5 = 666.

It is not a de Polignac number, because 71503452405 - 2² = 71503452401 is a prime.

It is a super-2 number, since 2×71503452405² (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 71503452405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71503452401) 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 63 ways as a sum of consecutive naturals, for example, 3428925 + ... + 3449714.

It is an arithmetic number, because the mean of its divisors is an integer number (2476310400).

Almost surely, 2^71503452405 is an apocalyptic number.

It is an amenable number.

71503452405 is an abundant number, since it is smaller than the sum of its proper divisors (86980413195).

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

71503452405 is a wasteful number, since it uses less digits than its factorization.

71503452405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878671 (or 6878665 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The spelling of 71503452405 in words is "seventy-one billion, five hundred three million, four hundred fifty-two thousand, four hundred five".