71211288492 has 72 divisors (see below), whose sum is σ = 184274264720. Its totient is φ = 23179893120.

The previous prime is 71211288481. The next prime is 71211288521. The reversal of 71211288492 is 29488211217.

71211288492 is a `hidden beast` number, since 71 + 2 + 1 + 12 + 88 + 492 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188598 + ... + 421890.

Almost surely, 2^71211288492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71211288492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92137132360).

71211288492 is an abundant number, since it is smaller than the sum of its proper divisors (113062976228).

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

71211288492 is a wasteful number, since it uses less digits than its factorization.

71211288492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233503 (or 233498 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The spelling of 71211288492 in words is "seventy-one billion, two hundred eleven million, two hundred eighty-eight thousand, four hundred ninety-two".