71547640746 has 32 divisors (see below), whose sum is σ = 146440673280. Its totient is φ = 23291781744.

The previous prime is 71547640739. The next prime is 71547640751. The reversal of 71547640746 is 64704674517.

It is a happy 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, 4155271 + ... + 4172453.

It is an arithmetic number, because the mean of its divisors is an integer number (4576271040).

Almost surely, 2^71547640746 is an apocalyptic number.

71547640746 is an abundant number, since it is smaller than the sum of its proper divisors (74893032534).

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

71547640746 is a wasteful number, since it uses less digits than its factorization.

71547640746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33370.

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 71547640746 in words is "seventy-one billion, five hundred forty-seven million, six hundred forty thousand, seven hundred forty-six".