64799350040 has 32 divisors (see below), whose sum is σ = 145877049360. Its totient is φ = 25905782400.

The previous prime is 64799350019. The next prime is 64799350043. The reversal of 64799350040 is 4005399746.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64799350043) 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 7 ways as a sum of consecutive naturals, for example, 360806 + ... + 509685.

Almost surely, 2^64799350040 is an apocalyptic number.

It is an amenable number.

64799350040 is an abundant number, since it is smaller than the sum of its proper divisors (81077699320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64799350040 is a wasteful number, since it uses less digits than its factorization.

64799350040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872363 (or 872359 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 64799350040 in words is "sixty-four billion, seven hundred ninety-nine million, three hundred fifty thousand, forty".