71547640045 has 16 divisors (see below), whose sum is σ = 98196484608. Its totient is φ = 49024235520.

The previous prime is 71547640039. The next prime is 71547640063. The reversal of 71547640045 is 54004674517.

It is not a de Polignac number, because 71547640045 - 2⁵ = 71547640013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71547639983 and 71547640010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723796 + ... + 816685.

It is an arithmetic number, because the mean of its divisors is an integer number (6137280288).

Almost surely, 2^71547640045 is an apocalyptic number.

It is an amenable number.

71547640045 is a deficient number, since it is larger than the sum of its proper divisors (26648844563).

71547640045 is a wasteful number, since it uses less digits than its factorization.

71547640045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541820.

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 71547640045 in words is "seventy-one billion, five hundred forty-seven million, six hundred forty thousand, forty-five".