71445670451 has 8 divisors (see below), whose sum is σ = 71673374640. Its totient is φ = 71218109952.

The previous prime is 71445670423. The next prime is 71445670459. The reversal of 71445670451 is 15407654417.

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 71445670451 - 2²² = 71441476147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71445670459) 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, 1008140 + ... + 1076678.

It is an arithmetic number, because the mean of its divisors is an integer number (8959171830).

Almost surely, 2^71445670451 is an apocalyptic number.

71445670451 is a deficient number, since it is larger than the sum of its proper divisors (227704189).

71445670451 is a wasteful number, since it uses less digits than its factorization.

71445670451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71845.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 71445670451 in words is "seventy-one billion, four hundred forty-five million, six hundred seventy thousand, four hundred fifty-one".