16211645514634 has 4 divisors (see below), whose sum is σ = 24317468271954. Its totient is φ = 8105822757316.

The previous prime is 16211645514593. The next prime is 16211645514677. The reversal of 16211645514634 is 43641554611261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15807359367409 + 404286147225 = 3975847^2 + 635835^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4052911378657 + ... + 4052911378660.

Almost surely, 2^{16211645514634} is an apocalyptic number.

16211645514634 is a deficient number, since it is larger than the sum of its proper divisors (8105822757320).

16211645514634 is an equidigital number, since it uses as much as digits as its factorization.

16211645514634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8105822757319.

The product of its digits is 2073600, while the sum is 49.

The spelling of 16211645514634 in words is "sixteen trillion, two hundred eleven billion, six hundred forty-five million, five hundred fourteen thousand, six hundred thirty-four".