40006616421 has 8 divisors (see below), whose sum is σ = 53367945120. Its totient is φ = 26658182672.

The previous prime is 40006616417. The next prime is 40006616449. The reversal of 40006616421 is 12461660004.

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 40006616421 - 2² = 40006616417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40006616401) 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, 3216495 + ... + 3228908.

It is an arithmetic number, because the mean of its divisors is an integer number (6670993140).

Almost surely, 2^40006616421 is an apocalyptic number.

It is an amenable number.

40006616421 is a deficient number, since it is larger than the sum of its proper divisors (13361328699).

40006616421 is a wasteful number, since it uses less digits than its factorization.

40006616421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447475.

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 40006616421 in words is "forty billion, six million, six hundred sixteen thousand, four hundred twenty-one".