2251206106405 has 8 divisors (see below), whose sum is σ = 2701739779200. Its totient is φ = 1800769917456.

The previous prime is 2251206106393. The next prime is 2251206106411. The reversal of 2251206106405 is 5046016021522.

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 2251206106405 - 2¹⁵ = 2251206073637 is a prime.

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, 24320145 + ... + 24412534.

It is an arithmetic number, because the mean of its divisors is an integer number (337717472400).

Almost surely, 2^{2251206106405} is an apocalyptic number.

It is an amenable number.

2251206106405 is a deficient number, since it is larger than the sum of its proper divisors (450533672795).

2251206106405 is an equidigital number, since it uses as much as digits as its factorization.

2251206106405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48741923.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 2251206106405 in words is "two trillion, two hundred fifty-one billion, two hundred six million, one hundred six thousand, four hundred five".