1672006621405 has 8 divisors (see below), whose sum is σ = 2112008364000. Its totient is φ = 1267205018256.

The previous prime is 1672006621331. The next prime is 1672006621429. The reversal of 1672006621405 is 5041266002761.

It is a happy number.

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 1672006621405 - 2¹⁷ = 1672006490333 is a prime.

It is a super-2 number, since 2×1672006621405² (a number of 25 digits) contains 22 as substring.

It is a congruent 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, 8800034755 + ... + 8800034944.

It is an arithmetic number, because the mean of its divisors is an integer number (264001045500).

Almost surely, 2^{1672006621405} is an apocalyptic number.

It is an amenable number.

1672006621405 is a deficient number, since it is larger than the sum of its proper divisors (440001742595).

1672006621405 is a wasteful number, since it uses less digits than its factorization.

1672006621405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17600069723.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 1672006621405 in words is "one trillion, six hundred seventy-two billion, six million, six hundred twenty-one thousand, four hundred five".