3497780428861 has 8 divisors (see below), whose sum is σ = 3712767967224. Its totient is φ = 3283819084800.

The previous prime is 3497780428841. The next prime is 3497780428871. The reversal of 3497780428861 is 1688240877943.

It can be written as a sum of positive squares in 4 ways, for example, as 2148953696761 + 1348826732100 = 1465931^2 + 1161390^2 .

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 3497780428861 - 2²⁵ = 3497746874429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3497780428811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256541550 + ... + 256555183.

It is an arithmetic number, because the mean of its divisors is an integer number (464095995903).

Almost surely, 2^{3497780428861} is an apocalyptic number.

It is an amenable number.

3497780428861 is a deficient number, since it is larger than the sum of its proper divisors (214987538363).

3497780428861 is a wasteful number, since it uses less digits than its factorization.

3497780428861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513097151.

The product of its (nonzero) digits is 130056192, while the sum is 67.

The spelling of 3497780428861 in words is "three trillion, four hundred ninety-seven billion, seven hundred eighty million, four hundred twenty-eight thousand, eight hundred sixty-one".