6318784406261 has 8 divisors (see below), whose sum is σ = 6331611847680. Its totient is φ = 6305968186128.

The previous prime is 6318784406243. The next prime is 6318784406269. The reversal of 6318784406261 is 1626044878136.

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 6318784406261 - 2¹⁴ = 6318784389877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6318784406197 and 6318784406206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6318784406269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1677506 + ... + 3930851.

It is an arithmetic number, because the mean of its divisors is an integer number (791451480960).

Almost surely, 2^{6318784406261} is an apocalyptic number.

It is an amenable number.

6318784406261 is a deficient number, since it is larger than the sum of its proper divisors (12827441419).

6318784406261 is a wasteful number, since it uses less digits than its factorization.

6318784406261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610643.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 6318784406261 in words is "six trillion, three hundred eighteen billion, seven hundred eighty-four million, four hundred six thousand, two hundred sixty-one".