64687029242 has 32 divisors (see below), whose sum is σ = 106185401280. Its totient is φ = 29310561280.

The previous prime is 64687029241. The next prime is 64687029247. The reversal of 64687029242 is 24292078646.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64687029241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20619098 + ... + 20622234.

It is an arithmetic number, because the mean of its divisors is an integer number (3318293790).

Almost surely, 2^64687029242 is an apocalyptic number.

64687029242 is a deficient number, since it is larger than the sum of its proper divisors (41498372038).

64687029242 is a wasteful number, since it uses less digits than its factorization.

64687029242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5806.

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 64687029242 in words is "sixty-four billion, six hundred eighty-seven million, twenty-nine thousand, two hundred forty-two".