213374420737 has 4 divisors (see below), whose sum is σ = 215331984340. Its totient is φ = 211416857136.

The previous prime is 213374420719. The next prime is 213374420747. The reversal of 213374420737 is 737024473312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 180985579776 + 32388840961 = 425424^2 + 179969^2 .

It is a cyclic number.

It is not a de Polignac number, because 213374420737 - 2³⁵ = 179014682369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213374420693 and 213374420702.

It is not an unprimeable number, because it can be changed into a prime (213374420747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978781638 + ... + 978781855.

It is an arithmetic number, because the mean of its divisors is an integer number (53832996085).

Almost surely, 2^213374420737 is an apocalyptic number.

It is an amenable number.

213374420737 is a deficient number, since it is larger than the sum of its proper divisors (1957563603).

213374420737 is a wasteful number, since it uses less digits than its factorization.

213374420737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957563602.

The product of its (nonzero) digits is 592704, while the sum is 43.

The spelling of 213374420737 in words is "two hundred thirteen billion, three hundred seventy-four million, four hundred twenty thousand, seven hundred thirty-seven".