64134509655 has 24 divisors (see below), whose sum is σ = 108658256112. Its totient is φ = 32190978816.

The previous prime is 64134509639. The next prime is 64134509683. The reversal of 64134509655 is 55690543146.

It is not a de Polignac number, because 64134509655 - 2⁴ = 64134509639 is a prime.

It is a super-2 number, since 2×64134509655² (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 23 ways as a sum of consecutive naturals, for example, 4036116 + ... + 4051974.

It is an arithmetic number, because the mean of its divisors is an integer number (4527427338).

Almost surely, 2^64134509655 is an apocalyptic number.

64134509655 is a deficient number, since it is larger than the sum of its proper divisors (44523746457).

64134509655 is an frugal number, since it uses more digits than its factorization.

64134509655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31743 (or 15884 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 64134509655 in words is "sixty-four billion, one hundred thirty-four million, five hundred nine thousand, six hundred fifty-five".