40001642512 has 40 divisors (see below), whose sum is σ = 83480531904. Its totient is φ = 18458853504.

The previous prime is 40001642441. The next prime is 40001642557. The reversal of 40001642512 is 21524610004.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350453 + ... + 1379755.

Almost surely, 2^40001642512 is an apocalyptic number.

It is an amenable number.

40001642512 is an abundant number, since it is smaller than the sum of its proper divisors (43478889392).

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

40001642512 is a wasteful number, since it uses less digits than its factorization.

40001642512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35887 (or 35881 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 40001642512 in words is "forty billion, one million, six hundred forty-two thousand, five hundred twelve".