71428294487 has 8 divisors (see below), whose sum is σ = 77942343312. Its totient is φ = 64917673600.

The previous prime is 71428294471. The next prime is 71428294489. The reversal of 71428294487 is 78449282417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71428294487 - 2⁴ = 71428294471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428294489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813314 + ... + 896847.

It is an arithmetic number, because the mean of its divisors is an integer number (9742792914).

Almost surely, 2^71428294487 is an apocalyptic number.

71428294487 is a deficient number, since it is larger than the sum of its proper divisors (6514048825).

71428294487 is a wasteful number, since it uses less digits than its factorization.

71428294487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713969.

The product of its digits is 7225344, while the sum is 56.

The spelling of 71428294487 in words is "seventy-one billion, four hundred twenty-eight million, two hundred ninety-four thousand, four hundred eighty-seven".