16427601745 has 4 divisors (see below), whose sum is σ = 19713122100. Its totient is φ = 13142081392.

The previous prime is 16427601713. The next prime is 16427601851. The reversal of 16427601745 is 54710672461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54710672461 = 2441 ⋅22413221.

It can be written as a sum of positive squares in 2 ways, for example, as 5189905681 + 11237696064 = 72041^2 + 106008^2 .

It is a cyclic number.

It is not a de Polignac number, because 16427601745 - 2⁵ = 16427601713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642760170 + ... + 1642760179.

It is an arithmetic number, because the mean of its divisors is an integer number (4928280525).

Almost surely, 2^16427601745 is an apocalyptic number.

It is an amenable number.

16427601745 is a deficient number, since it is larger than the sum of its proper divisors (3285520355).

16427601745 is an equidigital number, since it uses as much as digits as its factorization.

16427601745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285520354.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 16427601745 in words is "sixteen billion, four hundred twenty-seven million, six hundred one thousand, seven hundred forty-five".