40321688571 has 8 divisors (see below), whose sum is σ = 59735834960. Its totient is φ = 26881125696.

The previous prime is 40321688569. The next prime is 40321688587. The reversal of 40321688571 is 17588612304.

40321688571 is a `hidden beast` number, since 40 + 32 + 1 + 6 + 8 + 8 + 571 = 666.

It is not a de Polignac number, because 40321688571 - 2¹ = 40321688569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40321688501) 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, 746697910 + ... + 746697963.

It is an arithmetic number, because the mean of its divisors is an integer number (7466979370).

Almost surely, 2^40321688571 is an apocalyptic number.

40321688571 is a deficient number, since it is larger than the sum of its proper divisors (19414146389).

40321688571 is a wasteful number, since it uses less digits than its factorization.

40321688571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493395882 (or 1493395876 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 40321688571 in words is "forty billion, three hundred twenty-one million, six hundred eighty-eight thousand, five hundred seventy-one".