40065879584 has 12 divisors (see below), whose sum is σ = 78879700494. Its totient is φ = 20032939776.

The previous prime is 40065879569. The next prime is 40065879643. The reversal of 40065879584 is 48597856004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31531815184 + 8534064400 = 177572^2 + 92380^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626029337 + ... + 626029400.

Almost surely, 2^40065879584 is an apocalyptic number.

It is an amenable number.

40065879584 is a deficient number, since it is larger than the sum of its proper divisors (38813820910).

40065879584 is a wasteful number, since it uses less digits than its factorization.

40065879584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252058747 (or 1252058739 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 40065879584 in words is "forty billion, sixty-five million, eight hundred seventy-nine thousand, five hundred eighty-four".