64042412345 has 8 divisors (see below), whose sum is σ = 76852281480. Its totient is φ = 51233005440.

The previous prime is 64042412341. The next prime is 64042412417. The reversal of 64042412345 is 54321424046.

It can be written as a sum of positive squares in 4 ways, for example, as 1254080569 + 62788331776 = 35413^2 + 250576^2 .

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

It is not a de Polignac number, because 64042412345 - 2² = 64042412341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64042412341) 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, 391661 + ... + 530549.

It is an arithmetic number, because the mean of its divisors is an integer number (9606535185).

Almost surely, 2^64042412345 is an apocalyptic number.

It is an amenable number.

64042412345 is a deficient number, since it is larger than the sum of its proper divisors (12809869135).

64042412345 is a wasteful number, since it uses less digits than its factorization.

64042412345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231115.

The product of its (nonzero) digits is 92160, while the sum is 35.

The spelling of 64042412345 in words is "sixty-four billion, forty-two million, four hundred twelve thousand, three hundred forty-five".