64212294481 has 8 divisors (see below), whose sum is σ = 67993965000. Its totient is φ = 60431121408.

The previous prime is 64212294473. The next prime is 64212294511. The reversal of 64212294481 is 18449221246.

It can be written as a sum of positive squares in 4 ways, for example, as 27065514256 + 37146780225 = 164516^2 + 192735^2 .

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 64212294481 - 2³ = 64212294473 is a prime.

It is a super-2 number, since 2×64212294481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64212294781) 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, 160005 + ... + 392461.

It is an arithmetic number, because the mean of its divisors is an integer number (8499245625).

Almost surely, 2^64212294481 is an apocalyptic number.

It is an amenable number.

64212294481 is a deficient number, since it is larger than the sum of its proper divisors (3781670519).

64212294481 is a wasteful number, since it uses less digits than its factorization.

64212294481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248723.

The product of its digits is 221184, while the sum is 43.

The spelling of 64212294481 in words is "sixty-four billion, two hundred twelve million, two hundred ninety-four thousand, four hundred eighty-one".