6461264785 has 8 divisors (see below), whose sum is σ = 7756220736. Its totient is φ = 5167209840.

The previous prime is 6461264779. The next prime is 6461264813. The reversal of 6461264785 is 5874621646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-6461264785 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209371 + ... + 238240.

It is an arithmetic number, because the mean of its divisors is an integer number (969527592).

Almost surely, 2^6461264785 is an apocalyptic number.

It is an amenable number.

6461264785 is a deficient number, since it is larger than the sum of its proper divisors (1294955951).

6461264785 is a wasteful number, since it uses less digits than its factorization.

6461264785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450503.

The product of its digits is 1935360, while the sum is 49.

The square root of 6461264785 is about 80381.9929150802. The cubic root of 6461264785 is about 1862.5410201316.

The spelling of 6461264785 in words is "six billion, four hundred sixty-one million, two hundred sixty-four thousand, seven hundred eighty-five".