64981007461 has 16 divisors (see below), whose sum is σ = 69738859008. Its totient is φ = 60435302400.

The previous prime is 64981007423. The next prime is 64981007467. The reversal of 64981007461 is 16470018946.

It is a cyclic number.

It is not a de Polignac number, because 64981007461 - 2¹⁵ = 64980974693 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 (64981007467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296380 + ... + 466693.

It is an arithmetic number, because the mean of its divisors is an integer number (4358678688).

Almost surely, 2^64981007461 is an apocalyptic number.

It is an amenable number.

64981007461 is a deficient number, since it is larger than the sum of its proper divisors (4757851547).

64981007461 is a wasteful number, since it uses less digits than its factorization.

64981007461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763212.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 64981007461 in words is "sixty-four billion, nine hundred eighty-one million, seven thousand, four hundred sixty-one".