64209654735 has 16 divisors (see below), whose sum is σ = 106049495040. Its totient is φ = 33140466720.

The previous prime is 64209654697. The next prime is 64209654763. The reversal of 64209654735 is 53745690246.

It is not a de Polignac number, because 64209654735 - 2¹⁵ = 64209621967 is a prime.

It is a super-2 number, since 2×64209654735² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69042175 + ... + 69043104.

It is an arithmetic number, because the mean of its divisors is an integer number (6628093440).

Almost surely, 2^64209654735 is an apocalyptic number.

64209654735 is a deficient number, since it is larger than the sum of its proper divisors (41839840305).

64209654735 is a wasteful number, since it uses less digits than its factorization.

64209654735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138085318.

The product of its (nonzero) digits is 5443200, while the sum is 51.

The spelling of 64209654735 in words is "sixty-four billion, two hundred nine million, six hundred fifty-four thousand, seven hundred thirty-five".