6461461387 has 2 divisors, whose sum is σ = 6461461388. Its totient is φ = 6461461386.

The previous prime is 6461461381. The next prime is 6461461397. The reversal of 6461461387 is 7831641646.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6461461387 is a prime.

It is not a weakly prime, because it can be changed into another prime (6461461381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230730693 + 3230730694.

It is an arithmetic number, because the mean of its divisors is an integer number (3230730694).

Almost surely, 2^6461461387 is an apocalyptic number.

6461461387 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461461387 is an equidigital number, since it uses as much as digits as its factorization.

6461461387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 46.

The square root of 6461461387 is about 80383.2158289279. The cubic root of 6461461387 is about 1862.5599109416.

The spelling of 6461461387 in words is "six billion, four hundred sixty-one million, four hundred sixty-one thousand, three hundred eighty-seven".