6261809461 has 16 divisors (see below), whose sum is σ = 6999004800. Its totient is φ = 5567367168.

The previous prime is 6261809431. The next prime is 6261809473. The reversal of 6261809461 is 1649081626.

It is a cyclic number.

It is not a de Polignac number, because 6261809461 - 2¹¹ = 6261807413 is a prime.

It is a super-2 number, since 2×6261809461² = 78420515451738221042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6261809431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86560 + ... + 141478.

It is an arithmetic number, because the mean of its divisors is an integer number (437437800).

Almost surely, 2^6261809461 is an apocalyptic number.

It is an amenable number.

6261809461 is a deficient number, since it is larger than the sum of its proper divisors (737195339).

6261809461 is a wasteful number, since it uses less digits than its factorization.

6261809461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55308.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 6261809461 is about 79131.5958451490. The cubic root of 6261809461 is about 1843.1751907345.

The spelling of 6261809461 in words is "six billion, two hundred sixty-one million, eight hundred nine thousand, four hundred sixty-one".