4406407621557 has 8 divisors (see below), whose sum is σ = 5889165532320. Its totient is φ = 2930627395920.

The previous prime is 4406407621493. The next prime is 4406407621579. The reversal of 4406407621557 is 7551267046044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4406407621557 - 2⁶ = 4406407621493 is a prime.

It is a super-2 number, since 2×4406407621557² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4406407621157) 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, 1744419807 + ... + 1744422332.

It is an arithmetic number, because the mean of its divisors is an integer number (736145691540).

Almost surely, 2^{4406407621557} is an apocalyptic number.

It is an amenable number.

4406407621557 is a deficient number, since it is larger than the sum of its proper divisors (1482757910763).

4406407621557 is a wasteful number, since it uses less digits than its factorization.

4406407621557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488842563.

The product of its (nonzero) digits is 5644800, while the sum is 51.

The spelling of 4406407621557 in words is "four trillion, four hundred six billion, four hundred seven million, six hundred twenty-one thousand, five hundred fifty-seven".