64211639007 has 8 divisors (see below), whose sum is σ = 85616745984. Its totient is φ = 42807145688.

The previous prime is 64211638999. The next prime is 64211639059. The reversal of 64211639007 is 70093611246.

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 64211639007 - 2³ = 64211638999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64211639707) 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, 221938 + ... + 421520.

It is an arithmetic number, because the mean of its divisors is an integer number (10702093248).

Almost surely, 2^64211639007 is an apocalyptic number.

64211639007 is a deficient number, since it is larger than the sum of its proper divisors (21405106977).

64211639007 is a wasteful number, since it uses less digits than its factorization.

64211639007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306829.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 64211639007 in words is "sixty-four billion, two hundred eleven million, six hundred thirty-nine thousand, seven".